|6953931||Bolometer type infrared detector|
A bolometer type infrared detector can restrict temperature drift due to self-heating and has a structure not causing degradation of characteristics by noise. The bolometer type infrared detector has a bolometer thin film serving as infrared ray detecting element, t...
|5825047||Optical semiconductor device|
An optical semiconductor device comprises a stripe-mesa structure provided on a semi-insulating substrate. The stripe-mesa structure comprises an undoped light absorption layer sandwiched by cladding layers, and by burying layers on both sides. With this ...
|4798435||Optical switch circuit|
An optical switch circuit is configured as a matrix array to arbitrarily switch the connections between optical transmission channels. The optical switch circit comprises a plurality of optical splitter coupled to input transmission channels, a plurality ...