摘要:
An optical-waveguide device mounted on a fixing member having a pair of opposing upright walls and a sub-mount unit including a metallic sub-mount of a rectangular solid shape inserted between the opposing upright walls and a nonmetallic sub-mount of a rectangular solid shape mounted on the metallic sub-mount, and fixed onto a base table. The fixing member and the sub-mount unit as well as the fixing member and the base table are spot-welded together using YAG welding.
摘要:
To provide a photonic crystal semiconductor device which enables various kinds of optical devices having a photonic crystal structure which is readily formed using a semiconductor and a semiconductor manufacturing process, and a manufacturing method thereof. The object can be achieved by a photonic crystal structure, including a lower DBR layer 1, a core layer 2, an upper DBR layer 3, and a dielectric multilayer film 6 which are sequentially laminated from an n-InP substrate 11 side, a plurality of holes 9 formed in the direction of a film thickness in the core layer 2 and the upper DBR layer 3, and a line defect portion 10 with none of the plurality of holes formed therein and disposed between the plurality of holes 9, wherein the line defect portion 10 serves as an optical waveguide.
摘要:
Compatible video signal information having first information indicating a pixel number of a video signal displayable by a video display apparatus and second information that is setting information required in order for the video display apparatus to display a video signal having the pixel number is transmitted to a video output apparatus. In the case where a video signal received from the video output apparatus after the compatible video signal information is transmitted is a video signal having a pixel number displayable by the video display apparatus but not being displayable, the compatible video signal information is updated so that setting information for the pixel number of that video signal is included in the second information.
摘要:
A semiconductor laser module includes a semiconductor device including a semiconductor laser and a bending waveguide through which a laser light emitted from the semiconductor laser propagates, a beam splitter splitting the laser light into a first laser light and a second laser light, a plurality of detectors respectively arranged at different positions in a cross section of a light flux of the second laser light to detect the second laser light, and a waveform shaping unit provided on an optical path of the laser light. The waveform shaping unit is configured to make a relation between an output of the semiconductor laser and detection values of the detectors approach a linear relation.
摘要:
A communication apparatus includes: a transmitting unit, a receiving unit and a control unit. The transmitting unit transmits video data to an external apparatus via a first transmission line. The receiving unit receives a command from the external apparatus via a second transmission line. The control unit that resets the transmitting unit without resetting the receiving unit if a communication error relating to the first transmission line is detected, and resets the receiving unit without resetting the transmitting unit if a communication error relating to the second transmission line is detected.
摘要:
Compatible video signal information having first information indicating a pixel number of a video signal displayable by a video display apparatus and second information that is setting information required in order for the video display apparatus to display a video signal having the pixel number is transmitted to a video output apparatus. In the case where a video signal received from the video output apparatus after the compatible video signal information is transmitted is a video signal having a pixel number displayable by the video display apparatus but not being displayable, the compatible video signal information is updated so that setting information for the pixel number of that video signal is included in the second information.
摘要:
A semiconductor laser module includes a semiconductor laser unit and a light selecting unit. The semiconductor laser unit includes a semiconductor laser substrate and a plurality of distributed reflector semiconductor laser devices formed on the semiconductor laser substrate in an array. Each of the distributed reflector semiconductor laser devices is configured to emit a laser light of a different wavelength from an output facet. The light selecting unit includes a light selecting device substrate and a light selecting device formed on the light selecting device substrate. The light selecting device is configured to selectively output a laser light emitted from a distributed reflector semiconductor laser device. The semiconductor laser unit and the light selecting unit are attached to each other in such a manner that the light selecting device is optically coupled to the distributed reflector semiconductor laser devices.
摘要:
A communication apparatus includes: a transmitting unit, a receiving unit and a control unit. The transmitting unit transmits video data to an external apparatus via a first transmission line. The receiving unit receives a command from the external apparatus via a second transmission line. The control unit that resets the transmitting unit without resetting the receiving unit if a communication error relating to the first transmission line is detected, and resets the receiving unit without resetting the transmitting unit if a communication error relating to the second transmission line is detected.
摘要:
An optical-waveguide device mounted on a fixing member having a pair of opposing upright walls and a sub-mount unit including a metallic sub-mount of a rectangular solid shape inserted between the opposing upright walls and a nonmetallic sub-mount of a rectangular solid shape mounted on the metallic sub-mount, and fixed onto a base table. The fixing member and the sub-mount unit as well as the fixing member and the base table are spot-welded together using YAG welding.
摘要:
An optical module including a temperature measurement module and an optical part having a temperature dependency. The module includes a temperature control part mounted directly or indirectly on the optical part and the temperature measurement part for controlling a temperature of the optical part and the measurement part by thermal contact. An adjustment system is also provided for adjusting a difference of the temperature of the optical part and the measurement part by controlling the heat flow into/out of the optical part or the measurement part.