Abramov
Andrey Abramov, Burbach GE
Patent application number | Description | Published |
---|---|---|
20100322268 | Dynamic Compensator for Controlling Stresses on Fiber in Fiber Optic Cables - A dynamic compensator for a fiber optic cable having a jacket which is centered along a longitudinal axis, an elongated buffer tube surrounded by the jacket, and an elongated fiber surrounded by the buffer tube and dimensioned to move radially inwards and outwards within the buffer tube. The dynamic compensator includes a cable holder configured to receive and loop a portion of the fiber optic cable so that when the jacket elongates, the fiber extending along the loop is displaced radially inwards so as to release stresses upon end portions of the fiber, and when the jacket shrinks, the fiber is displaced radially outward to increase stresses upon the end portions of the fiber. | 12-23-2010 |
Andrey Abramov, Burbach DE
Patent application number | Description | Published |
---|---|---|
20140241385 | LOW-MODE HIGH POWER FIBER COMBINER - A high power fiber laser system is configured with a combiner end fiber spliced to a combiner output fiber. The system further includes a light stripper extending along the combiner end and output fibers and configured with sequentially located zones which are provided with respective refractive indices. In a forward propagating direction of light signal, the upstream zone includes polymeric material with the refractive index higher than that of the cladding of the combiner end fiber. This zone is configured to remove the backreflected core guided light bled into the cladding of the combiner through a splice between combiner end and output fibers. The intermediate zone includes polymeric material configured with a refractive index lower than that of the cladding of the combiner output fiber so it can prevent clad guided signal light from decoupling the cladding under the material. The downstream zone is configured with polymeric material having a refractive index lower than that of the cladding of the combiner output fiber. The polymeric material of the downstream zone is impregnated with a plurality of light diffusers scattering high numerical aperture rays of the clad-guided signal light. | 08-28-2014 |
20140241663 | Ultra-High Power Multimode Combiner - An ultra-high power fiber laser system includes a multimode combiner which is configured with a plurality of low mode fibers bundled together and tapering toward its downstream end. The system further includes a clad mode absorber extending along the tapered downstream end of the combiner and extending over a portion of the combiner's output fiber. The absorber is configured with sequentially located zones which are provided with respective refractive indices. In a forward propagating direction of light signal, the upstream zone includes polymeric material with the refractive index higher than that of the cladding of the combiner end fiber. This zone is configured to remove the back reflected core guided light bled into the cladding of the combiner through a splice between combiner end and output fibers. The intermediate zone includes polymeric material configured with a refractive index lower than that of the cladding of the combiner output fiber so it can prevent clad guided signal light from decoupling the cladding under the material. The downstream zone is configured with polymeric material having a refractive index lower than that of the cladding of the combiner output fiber. The polymeric material of the downstream zone is impregnated with a plurality of light diffusers scattering high numerical aperture rays of the clad-guided signal light. | 08-28-2014 |
20150266130 | HAND MANEUVERABLE WELDING GUN - A hand displaceable laser welding gun is configured with an elongated support column extending along a longitudinal axis and made from lightweight material. A support plate is displaceably mounted to the column while supporting thereon an optical head axially which is provided with optics. The optics is configured to direct a laser beam along a path towards a welding zone through a protective window of the optical head. | 09-24-2015 |
Dmitri Abramov, Liberty Grove AU
Patent application number | Description | Published |
---|---|---|
20150200832 | Adaptive Document Autosaving Rate Based on Different Conditions - A method for collaborative document editing determines a document update upload rate based on edit characteristics. The document update upload rate is used to determine when edits made via a particular user device are sent to a document collaboration server. The edit characteristics include a number of a plurality of users collaboratively editing a document, a current edit location within the document for one of the users, and the type of connection and speed of the connection between a user device and the document collaboration server. The document update upload rate can be determined in response to a change in one of the edit characteristics. | 07-16-2015 |
Igor Abramov, Woodcroft AU
Patent application number | Description | Published |
---|---|---|
20140043004 | SYNCHRONOUS DC-DC CONVERSION - A synchronous DC-DC converter ( | 02-13-2014 |
Juri Abramov, Ulm DE
Patent application number | Description | Published |
---|---|---|
20090141026 | COMPUTER GRAPHICS WITH ENUMERATING QMC SEQUENCES IN VOXELS - The invention provides systems and computer-implemented methods for evaluating integrals using quasi-Monte Carlo methodologies, and in particular embodiments, adaptive quasi-Monte Carlo integration and adaptive integro-approximation in conjunction with techniques including a scrambled Halton Sequence, stratification by radical inversion, stratified samples from the Halton Sequence, deterministic scrambling, bias elimination by randomization, adaptive and deterministic anti-aliasing, anti-aliasing by rank-1 lattices, and trajectory splitting by dependent sampling and rank-1 lattices. | 06-04-2009 |
Mikhail Abramov, Burbach DE
Patent application number | Description | Published |
---|---|---|
20140314106 | Ultra-High Power Single Mode Fiber Laser System with Non-Uniformly Configure Fiber-to-Fiber Rod Multimode Amplifier - A high power fiber laser system includes a booster winch is configured as a fiber amplifier extending over free space, pump source and laser head including a reflective element which receives pump light and reflects toward the output end of the booster in a counter signal-propagating direction. The booster is configured with concentric and coextending frustoconically shaped (“MM”) core and cladding around the core. The core includes a mode transition region expanding between small diameter SM input and large diameter MM output core ends and configured so that amplification of high order modes is substantially suppressed as a single mode (“SM”) signal light propagates from the input to output core ends. The laser head receives output ends of respective pump light delivery fibers and signal fiber, respectively. The pump source is structured with a plurality of independent sub pumps arranged around the booster. The laser head supports a segmented mirror configured to reflect pump lights from respective pump sub-sources to the output end of the booster in a counter propagating direction, wherein the booster is configured to emit the amplified signal light reaching up to MW power levels substantially in the SM. | 10-23-2014 |
20140362877 | HIGH POWER FIBER LASER SYSTEM WITH DISTRIBUTIVE MODE ABSORBER - A clad absorber unit is provided on a passive fiber of a high power fiber laser system and operative to trap and remove modes propagating along the waveguide clad of the fiber. The mode absorber is configured with such an optimal length that the clad light may be removed in a localized manner, substantially uniformly removed over the entire length thereof. The absorber removing clad light in a unformed fashion includes a host material impregnated with diffusers. | 12-11-2014 |
20150370009 | HIGH POWER METAL CLAD MODE ABSORBER - A clad absorber unit is provided on a passive fiber of a high power fiber laser system and operative to trap and remove high order modes propagating along the clad of the passive fiber. The mode absorber has a composition made from one or more liquid metals and alloys thereof which are placed in the opening formed in the sheath of the passive fiber. The composition is configured to remove from the cladding the MM light having a predetermined light power which heats the composition at a temperature lower than a threshold temperature at which the absorber may be damaged. | 12-24-2015 |
Mikhail Abramov, Heverlee BE
Patent application number | Description | Published |
---|---|---|
20100009865 | OLIGONUCLEOTIDE ARRAYS - The present invention provides for oligonucleotide arrays wherein the oligonucleotides comprise six-membered sugar-ring nucleosides, especially tetrahydropyran nucleosides, more specifically altritol nucleosides. The present invention also provides for the use of said oligonucleotide arrays for detecting target molecules in samples (diagnostic or experimental use). The present invention also provides for a method of detecting target molecules in samples by using said oligonucleotide arrays comprising six-membered sugar-ring nucleosides. | 01-14-2010 |