Class / Patent application number | Description | Number of patent applications / Date published |
398050000 | Crossconnect | 52 |
20080205888 | Semiconductor optical amplifier type gate switch drive circuit, semiconductor optical amplifier type gate switching drive, and optical cross connect - A drive circuit is provided for a semiconductor optical amplifier type gate switch includes a first transmission path and a second transmission path. The first transmission path includes a common first sub-path between a signal source and a first node; and an individual second sub-path for each of a plurality of operational amplifiers between the first node and a corresponding one of the operational amplifiers. The second transmission path includes an individual third sub-path between each of the operational amplifiers and a second node; and a common fourth sub-path between the second node and the semiconductor optical amplifier type gate switches. Transmission delay times of all the individual second sub-paths are equal, and transmission delay times of all the individual third sub-paths are equal. | 08-28-2008 |
20080240715 | Optical fiber array alignment unit - An optical fiber alignment unit for the easy precise alignment of optical fibers in and array. In a preferred embodiment the positioning array is incorporated twice in an all optical cross connect switch utilizing MEMS mirrors for cross connecting optical fibers in a first set of optical fibers to optical fibers in a second set of optical fibers. The optical fibers are preferably arranged in rectangular arrays. These arrays include array sizes such as 4×8, 16×16 and 8×16. A preferred embodiment built and tested by Applicants is a modular optical switch in which an input 8×16 array of optical fibers from sixteen eight-fiber ribbons are cross-connected into an output 8×16 array of optical fibers also from sixteen eight-fiber ribbons. | 10-02-2008 |
20080240716 | Beam position sensor - A beam direction sensor for determining the direction of each beam in an array of light beams. The invention basically consists of a screen positioned to intersect the array of beams and a video camera to record the position of the images of the intersections. The screen can be any of a wide variety of screens that produce an image of the beams when illuminated with the beam. These include frosted glass and various diffusers. A preferred screen is a holographic diffusers. | 10-02-2008 |
20080260383 | CENTRALIZED RESOURCE MANAGEMENT IN WAVELENGTH SELECTIVE SWITCH BASED WAVELENGTH CROSS CONNECT SYSTEMS - A Centralized Resource Management (CRM) system that supports the sharing of all the transponders in a WXC node, i.e., any spare transponder can be reconfigured to accommodate any drop channel, regardless of wavelength or input port. Consequently, network restoration in case of network failures is supported as well as the ability to reconfigure as a result of dynamic traffic requirements in the network. CRM advantageously is applied to conventional WXC node as well as WSS-based WXC nodes in the WDM networks. Three CTM schemes which manage the transponders in the WSS-based WXC node are described along with reconfiguration algorithms for an optical switchless CRM solution. | 10-23-2008 |
20090067836 | METHOD, APPARATUS, SYSTEM, AND COMPUTER PROGRAM TO VALIDATE NETWORK ELEMENT INTERFACES FOR FUNCTIONAL TESTING - A method, apparatus, computer program, and system for validating network element interfaces for functional testing. The method is comprised of coupling together at least two main interfaces of a plurality of main interfaces of at least one network element and providing a signal to one of the main interfaces via at least one communication path such that the signal propagates through that main interface to at least one other of the main interfaces coupled thereto, and back to the at least one communication path. By virtue of the method, apparatus, system, and computer program for validating network element interfaces for functional testing, the amount of time necessary to validate network element interfaces during functional testing can be reduced. | 03-12-2009 |
20090142057 | OPTICAL TRANSMISSION EQUIPMENT AND OPTICAL NETWORK - In order to insert a regenerator into a wavelength cross-connect equipment, there is provided at least one port that demultiplexes one wavelength among the wavelength multiplexed signals that are input to a wavelength selective switch. An output of the port that demultiplexes one wavelength is input to the regenerator, and an output of the regenerator is again input to the WSS. The wavelength output from the regenerator is converted into another wavelength different from the wavelength that is input to the regenerator and can be processed by the WSS in advance. The output from the regenerator is input to the WSS through an optical coupler or another input port of the WSS. | 06-04-2009 |
20090142058 | PHOTONIC CROSS-CONNECT - A photonic cross-connect includes a plurality of ingress WS-switches with drop outputs outputting WDM drop signals including odd channels and a plurality of egress WS-switches for receiving WDM add signals including add channels. Wavelength selective elements in a drop path and in an add path comply with a double frequency spacing and about a double bandwidth of the ingress WS-switches or egress WS-switches. If both odd and even channels are dropped and added, separate add and drop paths are provided for the odd and for the even channels. | 06-04-2009 |
20090214207 | PACKAGING A RECONFIGURABLE OPTICAL ADD-DROP MODULE - A hermetically packaged, MEMS array-based ROADM module is disclosed. The enclosure sidewalls and a top lid are made of Kovar, and the base is made of alumina ceramic AuSn-soldered to the enclosure sidewalls. The MEMS array is attached to the ceramic base. The optics are passively pre-aligned using a removable template and epoxied to an optical bench. The optical bench is actively aligned as a whole and attached to the ceramic base. A plurality of electrical feedthrough contact pins extend from the bottom of the ceramic base for connecting the MEMS to a connector on a printed circuit board. In one embodiment of the invention, the ceramic base extends beyond the footprint of the sidewalls of the enclosure of the module, for mounting additional electronic components, for example MEMS driver circuitry chips, directly to the ceramic base of the enclosure. | 08-27-2009 |
20090220229 | TRANSPARENT SWITCHING FABRIC FOR MULTI-GIGABIT TRANSPORT - A communication apparatus includes at least one input port, multiple output ports, at least one Serial-to-Parallel (S/P) converter and at least one Parallel-to-Serial (P/S) converter. The S/P converter is operative to receive from the input port an input data stream that is to be cross-connected to a destination output port, and to separate the input data stream into multiple sub-streams. Each of the switching planes includes at least one input for receiving a respective sub-stream from the S/P converter; multiple outputs, each output associated with a respective one of the output ports; and switching circuitry, which is configured to switch the respective sub-stream to the output that is associated with the destination output port. The P/S converter is coupled to the outputs of the switching planes so as to combine the multiple sub-streams switched by the switching circuitry into a combined output data stream at the destination output port. | 09-03-2009 |
20090232497 | DIRECTIONLESS RECONFIGURABLE OPTICAL ADD-DROP MULTIPLEXER SYSTEMS AND METHODS - The present invention provides a directionless reconfigurable optical add/drop multiplexer (ROADM) system. The present invention provides a scalable all-optical switching element that includes a combination of 1×N wavelength selective switches (WSS), 1×N splitters/combiners, optical amplifiers, and tunable filters to provide a fully non-blocking solution which can be deployed in a scalable manner. The 1×N splitters are configured to split multiples copies of a plurality of drop wavelengths which can be amplified and sent to a tunable filter which selects out a particular wavelength for drop. The 1×N combiners are configured to combine multiple add wavelengths for egress transmission. | 09-17-2009 |
20100061728 | Object Modeling Scheme For Next Generation Network Wavelength Division Multiplexing - An apparatus comprising a plurality of entities associated with a network element (NE), wherein the entities are associated with each other in a hierarchical architecture, wherein each entity is assigned an Access Identifiers (AID), and wherein each AID comprises a prefix that indicates a type for the corresponding entity and a numerical field that indicates the association between the corresponding entities and the remaining entities. Also disclosed is an apparatus comprising at least one processor configured to implement a method comprising assigning an AID to each of a plurality of NE entities having a hierarchical relationship, wherein the AID comprises a prefix comprising no more than about five characters and a numerical string consisting essentially of numbers, and managing the NE entities using the AIDs. | 03-11-2010 |
20100092172 | APPARATUS AND METHOD FOR CROSS-CONNECTING OPTICAL PATH IN WAVELENGTH DIVISION MULTIPLEXING SYSTEM - Provided is an optical network in which a wavelength division multiplexing-based optical transmission scheme is implemented. An apparatus for cross-connecting an optical path includes a path switch including a plurality of input terminals receiving optical signals from other nodes, and a plurality of output terminals sending the optical signals to the other nodes, the path switch switching the path of the optical signal so that the optical signal input via one of the input terminals is output to one of the output terminals; and a wavelength converter converting a wavelength of the optical signal input via the input terminal and outputting the wavelength-converted optical signal to the output terminal according to a switching result of the path switch. Thus, inefficient use of a network resource due to wavelength collision can be prevented, the path can be automatically cross-connected and thus quickly established, path switching and branch combination can be performed irrespective of wavelength, and switching can be performed irrespective of direction. | 04-15-2010 |
20100092173 | CROSS-CONNECT METHOD AND CROSS-CONNECT APPARATUS - A cross-connect apparatus and method where the apparatus includes an interface section which divides signals from a transmission line into multiple paths to provide the signals to cross-connect sections, and multiplexes signals provided from the cross-connect sections to send out the signals to the transmission line, the cross-connect sections cross-connects the signals from the interface section to output the signals to the interface section. The cross-connect apparatus includes a control section which determines a number of paths divided by the interface section and an operation mode of the cross-connect sections, according to a line capacity occupied by the signals from the transmission line and which controls the interface section and stops an operation of a cross-connect section which does not perform cross-connect processing. | 04-15-2010 |
20100260500 | MULT9-DEGREE WAVELENGTH CROSS-CONNECT USING BIDIRECTIONAL WAVELENGTH SELECTIVE SWITCH - A modular wavelength cross connect node for use in a dense wavelength division multiplexing network exhibiting low cost and improved performance by employing a bidirectional wavelength selective switch in a main optical path and using optical circulators to share any common ports. | 10-14-2010 |
20100260501 | BIDIRECTIONAL WAVELENGTH CROSS CONNECT ARCHITECTURES USING WAVELENGTH ROUTING ELEMENTS - Bidirectional wavelength cross connects include a plurality of ports, each configured to receive an input optical signals, each input optical signal having a plurality of spectral bands. At least one of the plurality of ports is disposed to simultaneously transmit an output optical signal having at least one of the spectral bands. A plurality of wavelength routing elements are configured to selectively route input optical signal spectral bands to output optical signals. | 10-14-2010 |
20100303461 | Undirected Cross Connects Based on Wavelength-Selective Switches - Undirected cross connects are provided based on wavelength-selective switches. A undirected Cantor network is disclosed where the switch nodes are wavelength selective switches. A undirected Clos cross connect is also disclosed where one or more undirected switches are undirected Cantor networks having at least one wavelength selective switch. | 12-02-2010 |
20110116797 | SIGNAL POWER BASED ROUTING IN WDM ALL-OPTICAL NETWORKS - In a Wavelength Division Multiplexed (WDM) all-optical network having optical nodes linked together by optical fibers carrying communication channels of separate wave-lengths, a method is applied in order to extend the size of the all-optical network. According to the method, a model is set up for the all-optical network in which a wavelength graph containing vertices and edges represents the physical effects of the nodes and links. After identifying a set of demand, an objective function is calculated expressing the total routing cost and total signal power demand of the channels. The minimum of the objective function returns the signal powers for each channel to be tuned. | 05-19-2011 |
20110318006 | MULTIPLE INPUT/OUTPUT WAVELENGTH SELECTIVE SWITCH DEVICE - A multiple input/output wavelength selective switch device | 12-29-2011 |
20110318007 | OPTICAL TRANSMISSION SYSTEM - An optical transmission system | 12-29-2011 |
20120002964 | OPTICAL ADD DROP MULTIPLEXER - An optical add-drop multiplexer having first and second routes includes: an optical cross connect; a first multiplexer optically coupled to a plurality of output ports of the optical cross connect; a second multiplexer optically coupled to a plurality of other output ports of the optical cross connect; a first wavelength selective switch to generate a first WDM optical signal including an optical signal output from the first multiplexer and to guide the first WDM optical signal to the first route; and a second wavelength selective switch to generate a second WDM optical signal including optical signal output from the second multiplexer and to guide the second WDM optical signal to the second route. | 01-05-2012 |
20120020664 | WAVELENGTH SELECTIVE LIGHT CROSS CONNECT DEVICE - A wavelength selective light cross connect device | 01-26-2012 |
20120063779 | METHOD, APPARATUS AND SYSTEM FOR ADVERTISING ROUTING PROTOCOL MESSAGE AND CALCULATING ROUTE - A method, apparatus and system for advertising a routing protocol message and calculating a route are provided which solve the problems that the time of connection establishment or rerouting in wavelength routing is too long and that wavelength utilization efficiency is low. The method for advertising the routing protocol message includes: obtaining node information and link information of a node, in which the node information contains port cross-connection capability information of the node, and the link information contains wavelength restriction information and wavelength status information of each link connected to the node; carrying the obtained node information and link information in a Type-Length-Value object of a routing protocol message, and advertising the routing protocol message in the network. | 03-15-2012 |
20120155871 | OPTICAL TRANSPORT APPARATUS AND OPTICAL TRANSPORT SYSTEM - In an embodiment of the invention, an optical transport apparatus comprises first wavelength-division-multiplex optical signal processing units each corresponding to each of transmission lines, an interface unit connected to a client apparatus and converting a client signal to and from a signal to be wavelength-division multiplexed, and a second wavelength-division-multiplex optical signal processing unit connected to the interface unit and receiving the signal to be wavelength-division multiplexed from the interface unit. Each of the first wavelength-division-multiplex optical signal processing units includes a wavelength selective switch including inputs, multiplexing signals selected from optical input signals received from the inputs and outputting the multiplex signal to a corresponding transmission line. The second wavelength-division-multiplex optical signal processing unit includes an optical splitter splitting an optical signal including the signal to be wavelength-division multiplexed and outputting the split signals to the wavelength selective switches in the first wavelength-division-multiplex optical signal processing units. | 06-21-2012 |
20120201536 | Method and System for Realizing Multi-Directional Reconfigurable Optical Add-Drop Multiplexing - A method and system for realizing multi-directional reconfigurable optical add-drop multiplexer are provided, and the system includes: N optical preamplifiers, N demultiplexing units and M optical crossbar switches; the method includes: amplifying optical signals sent from N directions respectively, and dividing the optical signals in each direction into M groups of optical signals with different wavelengths; then transmitting N groups of demultiplexed optical signals with same wavelength in each direction to the same optical crossbar switch, and each optical crossbar switch receiving N groups of optical signals with same wavelength; each optical crossbar switch outputting the inputted optical signals from the corresponding output interfaces according to configuration information, wherein M and N are positive integers. | 08-09-2012 |
20120237220 | PASSIVE OPTICAL NETWORK - A distribution node of a passive optical network (PON) comprises a first port for receiving a first optical continuous envelope modulated downstream data signal at a first wavelength (λ | 09-20-2012 |
20120269510 | DIGITAL SUBCARRIER OPTICAL NETWORK UTILIZING DIGITAL SUBCARRIER CROSS-CONNECTS WITH INCREASED ENERGY EFFICIENCY - The present invention provides reduced power dissipation and other benefits at the optical transport network layer by utilizing a digital subcarrier optical network comprising multiple digital subcarrier cross-connect switches. This offers several advantages for optical networks, including spectral efficiency and robustness against signal corruption and consumption of less energy than traditional TDM-based electric switches (OTN/SONET/SDH). | 10-25-2012 |
20130051799 | METHOD FOR DISPERSION COMPENSATION IN A MESH OPTICAL NETWORK, AND A NETWORK USING SAME - A method is provided for carrying out dispersion compensation in an optical mesh network supporting simultaneously traffic services being provided at two or three different bit rates including a basic bit rate being 10G bps and at least one higher bit rate selected from among 40 Gbps and 100 Gbps. The method comprises the following steps: providing in-line dispersion compensation for every span in the network so as to reach positive average residual dispersion RDS per span extending to less than about 3 km; providing start points of possible trails in the network with respective external, pre-compensation negative Dispersion Compensation modules (DCMs), and providing termination points of possible trails in the network with respective external post-compensation positive DCMs. | 02-28-2013 |
20130108267 | Methods for Expanding Cross-Connect Capacity in a ROADM Optical Network | 05-02-2013 |
20130195451 | Modular Optical Patch Panel - A scalable, modular optical mesh patch panel includes a multi-slot receptacle configured to receive at least one of a first modular optical interconnect block and a second modular optical interconnect block that enable connectivity among one or more add-drop modules and/or respective degrees of a reconfigurable optical add drop multiplexer node (ROADM). | 08-01-2013 |
20130195452 | DIGITAL SUBCARRIER CROSS-CONNECT SWITCHING - The present invention uses digital subcarrier cross-connect switching to accomplish various network processes more efficiently. These processes include interconnecting network components, and performing optical and optoelectronic add/drop operations. | 08-01-2013 |
20130195453 | TRANSMISSION APPARATUS AND SWITCHING METHOD - A transmission apparatus includes: an assigning unit to assign a number to a group of concatenation information of leading and dependent data which are multicast or broadcast; a retrieval unit to retrieve the concatenation information of the leading data corresponding to the dependent data, the leading and dependent data having the same number; a regeneration unit to regenerate concatenation information of the dependent data in accordance with the concatenation information of the leading data; a storage unit to store switch information of the leading data, the switch information representing a switch which switches output destinations of the leading and dependent data; an information retrieval unit to refer to the storage unit in accordance with leading data information included in the concatenation information of the dependent data so as to retrieve switch information of the dependent data; and a switching unit to switch the output destination of the dependent data. | 08-01-2013 |
20130209101 | DIGITAL SUBCARRIER OPTICAL NETWORK UTILIZING DIGITAL SUBCARRIER CROSS-CONNECTS WITH INCREASED ENERGY EFFICIENCY - The present invention provides reduced power dissipation and other benefits at the optical transport network layer by utilizing a digital subcarrier optical network comprising multiple digital subcarrier cross-connect switches. This offers several advantages for optical networks, including spectral efficiency and robustness against signal corruption and consumption of less energy than traditional TDM-based electric switches (OTN/SONET/SDH). | 08-15-2013 |
20130287397 | ELECTRO-OPTICAL SWITCHING FABRIC SYSTEMS AND METHODS - An optical switch fabric, including: a first set of horizontal optical waveguides receiving a plurality of wavelengths; a plurality of wavelength-selective drop optical switches associated with the first set of horizontal optical waveguides, wherein the plurality of wavelength-selective drop optical switches are each configured to drop a selected wavelength from a horizontal optical waveguide of the first set of horizontal optical waveguides to an associated vertical optical waveguide of a plurality of vertical optical waveguides; and a plurality of controllable optical switches associated with the plurality of vertical optical waveguides, wherein the plurality of controllable optical switches are each configured to direct a selected wavelength from a vertical optical waveguide of the plurality of vertical optical waveguides to a horizontal optical waveguide of a second set of horizontal optical waveguides, and wherein the second set of horizontal optical waveguides output a plurality of wavelengths. | 10-31-2013 |
20140003811 | MULTIBAND RECONFIGURABLE OPTICAL ADD-DROP MULTIPLEXING WITH CONVERGED SIGNAL ADDITION AND REMOVAL | 01-02-2014 |
20140029944 | OPTICAL CROSS-CONNECT APPARATUS - An optical cross-connect apparatus includes: a plurality of optical cross-connect portions each having an inter-node connection input port and an inter-node connection output port respectively connected to each of the plurality of the inter-node connection optical fibers, an internal connection input port, and an internal connection output port, wherein for each of the plurality of the optical cross-connect portions, the internal connection output port of a predetermined optical cross-connect portion is directly connected to the internal connection input port of another optical cross-connect portion, or the internal connection output port of a predetermined optical cross-connect portion is directly connected to the internal connection input port of another optical cross-connect portion and is indirectly connected via the another optical cross-connect portion to the internal connection input port of yet another optical cross-connect portion. | 01-30-2014 |
20140140697 | DATA CROSS-CONNECT SYSTEM AND METHOD - The present invention provides a data cross-connect system and method. The data cross-connect system comprises: at least two first stage cross-connect modules, at least one second stage cross-connect module and at least one third stage cross-connect module; the first stage cross-connect module comprises: a first stage cross-connect sub-module, a signal packaging sub-module, a first information generation sub-module and at least one transmitter. The present invention allows high rate interconnection between subracks, therefore the number of interconnecting optical fibers and connectors of the optical fibers can be reduced; in addition, the second stage cross-connect module applies cross-connecting directly in the optical layer, hence the number of cross-connect subracks can be reduced and the size and power consumption of the cross-connect subracks can also be reduced. | 05-22-2014 |
20140186038 | Multi Directional Multiplexer - Described herein is an optical transmission cross-connect for routing wavelength signals to a bank of directionless transceivers. One embodiment ( | 07-03-2014 |
20140241720 | LATCHING OPTICAL SWITCH AND SUBSYSTEM USING BISTABLE LIQUID CRYSTAL - A submarine network includes a submarine network with a branching unit BU for splitting or combining a signal between a main trunk path and a branch path for allowing signals from different paths to share a same fiber optic path, said BU and submarine network normally having a fixed and predetermined wavelength arrangement preventing reconfigurability of the submarine network, and a latching wavelength selective switch WSS or wavelength blocker WB in the branching unit for splitting or combining the signals between the main trunk path and branch path to enable a latching capability and enable reconfigurability of the branching unit BU, the latching WSSS being a bistable liquid crystal based material without moving parts for increased stability and lower power consumption over use of conventional mono-stable liquid crystal LC switches in a submarine network. | 08-28-2014 |
20140270767 | CROSS-CONNECT USING ETHERNET MULTIPLEXORS FOR A SIMPLE METRO ETHERNET NETWORK - A metro area network is provided that includes edge and core multiplexors each having a plurality of line ports and one or more uplink ports, a transport network carrying multiplexed traffic between the edge and core multiplexors. In a hard cross connect implementation utilizing source port tagging, a cross-connect device coupled to the core multiplexors provisions or maps communications path between the core multiplexors thereby providing preselected connectivity/mapping of two or more line ports of any of the edge multiplexors. In a soft cross connect implementation utilizing destination port tagging, a cross-connect device includes additional cross-connect multiplexors and functionality to control the destination port tagging performed in the edge, core and cross connect multiplexors thereby provisioning or mapping the desired communications path(s) between various endpoints. | 09-18-2014 |
20140321851 | TRANSMISSION DEVICE AND SYNCHRONIZATION CONTROL METHOD - A transmission device includes: a detector to detect a head pattern indicating a head of data for each of ports that receives the data; a write controller to write the data to a memory provided for each of the ports, based on a detection timing of the head pattern detected by the detector; a determination unit to determine, among ports for each of which the head pattern has been detected by the detector, a specific port for which a total delay amount is minimum, the total delay amount being a total sum of delay amounts from the head pattern related to the specific port to each of the head patterns related to ports other than the specific port; and a read controller to read the data from the memory, based on the detection timing of the head pattern related to the specific port determined by the determination unit. | 10-30-2014 |
20150037032 | High Connectivity Multiple Dimension Optical Network in Glass - An optical communications system includes a first plurality of optical components having optical ports, a second plurality of optical components having optical ports and an optical cross-connect. The optical cross-connect includes a block of a single continuous construction and material having a first side adjacent the first optical components and a second side adjacent the second optical components, and a plurality of non-intersecting, continuous waveguides formed within the block and extending from the first side of the block to the second side of the block. The refractive index of each waveguide is different than the surrounding material of the block, and each waveguide changes direction at least once within the block. The waveguides are optically aligned with the optical ports of the first optical components at the first side of the block and with the optical ports of the second optical components at the second side of the block. | 02-05-2015 |
20150086203 | METHOD AND APPARATUS FOR OPTICAL NODE CONSTRUCTION USING FIELD PROGRAMMABLE PHOTONICS - Example embodiments of the present invention relate to an optical signal processor comprising of at least one wavelength processing device, a plurality of optical amplifying devices, and a least one field programmable photonic device. | 03-26-2015 |
20150296278 | METHODS AND SYSTEMS FOR PASSIVE OPTICAL SWITCHING - Optical networking has become ubiquitous in providing low cost, high speed communications networks supporting our communication needs from FTTH through long haul to undersea. The large number of users and high speeds provided to each user fiber mean that information retrieval and routing functionality within the data centers hosting this information can become the bottleneck both in terms of speed and latency. According to embodiments of the invention the inventors present architectures based upon all-optical passive optical networks that support a distributive approach to latency reduction as well as protocols relating to their deployment. Beneficially, such POCXN concepts exploit optical components already supported by high volume manufacturing techniques as well as CWDM/DWDM techniques for throughput increase. | 10-15-2015 |
20150365186 | PHOTONIC CROSS-CONNECT WITH RECONFIGURABLE ADD-DROP-FUNCTIONALITY - A photonic cross-connect arrangement is presented which is able to cope with the transmission of super-channels, wherein complete super-channels are dropped and added to change a direction of transport. At least a cyclic filter is used in a drop-branch of a cross-connect for dividing a super-channel into sub-channels and/or at least a further cyclic filter is used in an add-branch to configure a super-channel. | 12-17-2015 |
20150365739 | SYSTEMS AND METHODS FOR DETECTING AND PROPAGATING RESIZABILITY INFORMATION OF ODUFLEX CONNECTIONS - A method, in a network element, for detecting and propagating resizability information of an Optical channel Data Unit flex (ODUflex) connection includes receiving resizability information in overhead associated with the ODUflex connection, wherein the resizability information indicates a number of available tributary slots and whether the ODUflex connection is symmetric; and adjusting the resizability information based on a change in the available tributary slots due to a bandwidth change at the network element. The systems and methods include a solution to communicate, in real time, the resizability information of an ODUflex connection utilizing the associated data path to carry it instead of the management/control plane. | 12-17-2015 |
20150381303 | OPTICAL NETWORK ARCHITECTURE FOR HIERARCHICAL MODULATION - A disclosed optical transport system is configured to use hierarchical modulation for better utilization of the available BER margin, e.g., to increase data-transport capacity per carrier wavelength in the system. For example, hierarchical modulation may be used to reduce the number of carrier wavelengths assigned to support a given volume of bidirectional data transport between a set of nodes in an optical backbone network. An embodiment of the disclosed optical transport system can advantageously be constructed by modifying a conventional WDM system, e.g., by adding configurable hierarchical-layer mappers at some of the nodes and modifying some of the ROADMs used therein to enable a drop-and-continue mode of operation. | 12-31-2015 |
20160021437 | SEMICONDUCTOR COMPONENT SYSTEM WITH WIRELESS INTERCONNECT AND ARRANGEMENTS THEREFOR - Embodiments of an integrated semiconductor component system are disclosed to solve both the interconnect bottleneck problem and the wiring problem simultaneously on the microscale of integrated semiconductor devices and on the macroscale of single computing systems consisting of integrated semiconductor devices by arranging single integrated semiconductor devices of an integrated semiconductor component system, or single integrated semiconductor component systems with the same distance from a center point in a geometric space. Furthermore, a working model to simulate entanglement of quantum based computing devices is provided. | 01-21-2016 |
20160057513 | OPTICAL SWITCH - An optical switch suitable for use in an add/drop of an optical network node having F>1 optical fiber per direction, the F fibers together carrying optical signals comprising up to N independent wavelength channels, is disclosed. The switch includes an Optical Cross-Connect (OXC) having F input ports and N output ports. F optical splitters are connected to the OXC, the input and output ports of the optical splitters defining ports of the OXC. The OXC is controllable to switch optical signals arriving at any of the F switch input ports to the input port of any of the F optical splitters such that each switch input port is switched to an optical splitter having at least as many splitter output ports as the number of independent wavelength channels received at the switch input port. A method for splitting optical signals is also disclosed. | 02-25-2016 |
20160057514 | OPTICAL SWITCH - An optical switch suitable for use in a ROADM of an optical network node having one or more optical fiber per direction, the fibers together carrying optical signals comprising up to N independent wavelength channels, is disclosed. The switch includes an Optical Cross-Connect (OXC) having F | 02-25-2016 |
20160066072 | A METHOD AND A DEVICE FOR CROSS-TALK CORRECTION OF MEASURED INTENSITIES - A method for cross-talk correction of intensities measured on mutually separate detection wavelength bands is presented. Each detection wavelength band relates to one of analyte-specific probe-populations contained by a sample to be analyzed. Each probe-population is capable of emitting a first signal component and a second signal component whose spectra have maxima at different wavelengths and at least the first signal component is dependent on presence of analyte detectable with that probe-population. Cross-talk corrected intensities are computed on the basis of a) the intensities measured on the detection wavelength bands, b) a value indicative of intensity occurring on an auxiliary wavelength band outside the detection wavelength bands and at least partially caused by the second signal components, and c) pre-determined cross-talk parameters. For example in con-junction with FRET-based assays, the dependency of a background signal on the percentage of hybridized probes can be taken into account in the cross-talk correction. | 03-03-2016 |
20160142797 | OPTICAL CROSS-CONNECT - An optical add-drop apparatus dropping a signal in input optical fibers in an optical cross-connect apparatus or adding a signal into output optical fibers from the cross-connect apparatus, optical cross-connect portions of the cross-connect apparatus connected such that a cross-connect portion internal connection output port is directly connected to an internal connection input port of another cross-connect portion and is indirectly connected via the other cross-connect portion to an internal connection output port of a further cross-connect portion, the add-drop apparatus having: photocouplers connected to part or all of the input fibers connected to each cross-connect portion; and drop signal receiving apparatuses each having optical switches each receiving and alternately selecting a signal output from photocouplers connected to respective different cross-connect portions of the cross-connect portions out of the photocouplers, the drop signal receiving apparatuses selecting a signal of a wavelength for each signal respectively output from the optical switches. | 05-19-2016 |
20160150300 | OPTICAL CROSS-CONNECT DEVICE - An optical cross-connect apparatus optical nodes in an optical network, the optical nodes being mutually connected through internode connection optical fibers, the optical cross-connect apparatus having: optical cross-connect portions having internode connection input ports and internode connection output ports respectively connected to the internode connection optical fibers, and internal connection input and output ports, the optical cross-connect portions being connected such that an internal connection output port of a predetermined optical cross-connect portion is directly connected to an internal connection input port of another optical cross-connect portion and is indirectly connected via the another optical cross-connect portion to an internal connection output port of a further optical cross-connect portion, at least one optical cross-connect portion of the optical cross-connect portions including an internal connection input port and an internal connection output port for connecting to an optical cross-connect portion for expansion connected to none of the other optical cross-connect portions. | 05-26-2016 |