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Japan, Japan

Patent
Oclaro Japan Inc. | Date: 2015-02-17

To provide a semiconductor optical device with device resistance reduced for optical communication. The semiconductor optical device includes an active layer (


Patent
Oclaro Japan Inc. | Date: 2014-10-23

An optical receiver module includes: a lens array including a plurality of condenser lenses arranged in one direction to define a plane with optical axes in parallel to each other; and a light receiving element array including a plurality of light receiving elements each configured to receive light emitted from each of the condenser lenses. The light receiving element array includes: a semiconductor substrate to which the light from each of the condenser lenses is input and through which the light is transmitted; and light receiving portions each configured to receive the light transmitted through the semiconductor substrate and convert the light into an electrical signal. A shift of the optical axis of each of the condenser lenses from a center of each corresponding one of the light receiving portions is larger in a direction perpendicular to the one direction within the plane than in the one direction.


Patent
Oclaro Japan Inc. | Date: 2015-07-06

An optical module includes an optical semiconductor device and a stem including a lead terminal configured to perform at least one of transmitting an electric signal to the optical semiconductor device or transmitting an electric signal output from the optical semiconductor device. The optical module also includes a substrate having a ground layer, a first opening through which the lead terminal passes, and a connecting portion configured to electrically connect the stem and the ground layer. The connecting portion is formed on one of an edge portion of the substrate and a surface of the substrate on a side on which the substrate is arranged on the stem.


Patent
Oclaro Japan Inc. | Date: 2015-01-05

In the semiconductor laser including a diffraction grating in which a first diffraction grating region with a first pitch, a second diffraction grating region with a second pitch and a third diffraction grating region with the first pitch, an anti-reflection film coated on an end facet to the light-emitting side, and a reflection film coated on an opposite end facet, the first diffraction grating region is greater than the third diffraction grating region, and the second diffraction grating region is formed, in such a manner that phases of the first and third diffraction grating regions are shifted in a range of equal to or more than 0.6 to equal to or less than 0.9 , phases are successive on a boundary between the first and second diffraction grating regions and the phases are successive on a boundary between the second and third diffraction grating regions.


Patent
Oclaro Japan Inc. | Date: 2015-01-28

A horizontal cavity surface emitting laser device includes an active layer configured to generate light to be emitted in one direction along the one surface of a semiconductor substrate and in another direction opposite to the one direction. The device also includes a rear distributed Bragg reflector unit configured to reflect the light. The rear distributed Bragg reflector unit includes a waveguide layer configured to guide light and a distributed Bragg reflector configured to reflect the light in the waveguide layer. The device further includes an optical component configured to guide, in a direction different from the one direction and the other direction, the light emitted from an end of the rear distributed Bragg reflector unit in the one direction. The device further includes a front reflecting mirror configured to reflect the light emitted from the active layer in the other direction toward another surface side of the semiconductor substrate.

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