Patent application number | Description | Published |
20130170807 | SPOT SIZE CONVERTER, OPTICAL TRANSMITTER, OPTICAL RECEIVER, OPTICAL TRANSCEIVER, AND METHOD OF MANUFACTURING SPOT SIZE CONVERTER - The spot size converter includes a first cladding layer, a first core layer and a second core layer arranged side by side on the first cladding layer so as to extend from a first end which receives/outputs light along a direction from the first end toward a second end, a third core layer which is disposed on the first cladding layer between the first and second core layers, is a member different from the first and second core layers, and extends to the second end along the direction from the first end toward the second end, and a second cladding layer disposed on the first, second, and third core layers. | 07-04-2013 |
20130229809 | OPTICAL DEVICE, OPTICAL TRANSMITTER, OPTICAL RECEIVER, OPTICAL TRANSCEIVER, AND METHOD OF MANUFACTURING OPTICAL DEVICE - An optical device includes: a first cladding layer; a core layer disposed on the first cladding layer and, with increase in its sectional area, extending from a first end which receives/outputs light along a direction from the first end toward a second end; a slab layer disposed on the first cladding layer and extending to the second end along the direction from the first end toward the second end; a rib layer disposed on the slab layer and, with decrease in its sectional area, extending to the second end along the direction from the first end toward the second end; and a second cladding layer disposed on the core layer and the rib layer. The core layer and both of the slab and rib layers are optically coupled in a part in which the sectional are of the core and rib layers is the maximum. | 09-05-2013 |
20130259081 | OPTICAL SEMICONDUCTOR DEVICE, LIGHT EMITTING DEVICE, OPTICAL TRANSMITTING DEVICE, AND METHOD OF MANUFACTURING OPTICAL SEMICONDUCTOR DEVICE - An optical semiconductor device includes: a substrate of semiconductor; an array having a plurality of active regions arranged on the substrate so as to emit light to the same direction, the plurality of active regions being arranged more densely at ends of the array than in the center of the array in a direction crossing the light emitting direction; and electrodes which inject current to the plurality of active regions. | 10-03-2013 |
20140233881 | OPTICAL WAVEGUIDE, OPTICAL INTERPOSER AND LIGHT SOURCE - An optical waveguide includes a substrate, a first core provided over the substrate and having a first taper region that extends from one side toward the other side and has a sectional area that decreases toward the other side, and a plurality of second cores provided over the substrate and over or under the first core with a first cladding layer sandwiched therebetween and extending in parallel to the substrate and the first core. | 08-21-2014 |
20140233901 | SPOT SIZE CONVERTER, LIGHT SOURCE, OPTICAL TRANSMITTER, OPTICAL RECEIVER AND OPTICAL TRANSMITTER-RECEIVER - A spot-size converter includes a substrate, a first core provided over the substrate, and second and third cores provided over the substrate and over or under the first core with a cladding layer sandwiched therebetween and extending in parallel to the substrate and the first core. | 08-21-2014 |
20140294341 | SPOT-SIZE CONVERTER, MANUFACTURING METHOD THEREOF, AND INTEGRATED OPTICAL CIRCUIT DEVICE - The invention relates to a spot-size converter, a manufacturing method thereof, and an integrated optical circuit device, and ensures easier coupling to the optical fiber and higher accuracy in manufacturing the spot-size converter. A first core that is extended from a first end configured to input/output light toward a second end, and a second core that is formed by a plurality of cores, and formed at a position to be evanescent-coupled to the first core, and moreover extended along a direction from the first end toward the second end are provided, and, on the second core, a third core that has a taper unit and is formed at a position to be evanescent-coupled to the second core in a lamination direction is provided. | 10-02-2014 |
20140314370 | OPTICAL SEMICONDUCTOR APPARATUS - An optical semiconductor device includes a silicon oxide layer configured to be formed on a substrate; an optical waveguide part configured to be formed on the silicon oxide layer; a cladding layer configured to be formed covering the optical waveguide part; and a semiconductor laser configured to be disposed on the substrate. Laser light emitted from the semiconductor laser enters the optical waveguide part. The optical waveguide part increases transmittance of light when the wavelength becomes greater within an oscillation wavelength range of the semiconductor laser. | 10-23-2014 |
20150277044 | OPTICAL WAVEGUIDE COUPLER AND METHOD FOR MANUFACTURING SAME - An optical waveguide coupler includes a substrate and an optical waveguide of a multi-layer structure of a first clad layer/a first waveguide layer/a second clad layer, at least, on the end surface side of an optical input and output provided on the substrate, characterized in that the first waveguide layer has such a distribution of the refractive index that the refractive index is the highest at the center of the first waveguide layer in the multi-layer structure in the stacking direction, and the first waveguide layer has such a protrusion in a convex form that the center portion having the highest refractive index protrudes in a cross section that is perpendicular to the end surface of the optical input and output and perpendicular to the main surface of the substrate. | 10-01-2015 |
20150277072 | SEMICONDUCTOR OPTICAL WAVEGUIDE DEVICE - Light that returns through reflection from the optical connection portion between a semiconductor optical waveguide and an optically functional element is reduced through the use of a simplified structure in a semiconductor optical waveguide device. The device is provided with an anti-reflection diffraction grating having the period to prevent light that has been led through the semiconductor optical waveguide towards the portion connected to the optically functional element from being reflected in the direction from which the light has been led. | 10-01-2015 |