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专利名称：Optical amplifier and optical switch device发明人：Suguru Akiyama,Kazuhiro Ikeda,Takeshi
Matsumoto,Hitoshi Kawashima,KeijiroSuzuki,Ken Tanizawa
申请号：US16055616申请日：20180806公开号：US11022811B2公开日：20210601
专利附图：
摘要：An optical amplifier includes a polarization splitter, a polarization rotator, firstand second optical couplers, and first and second semiconductor optical amplifyingdevices. The TE polarized wave of light split by the polarization splitter is input to a firstinput port of the first optical coupler. The TM polarized wave of the split light isconverted into a TE polarized wave by the polarization rotator to be input to a secondinput port of the first optical coupler. First light and second light output from a firstoutput port and a second output port of the first optical coupler are amplified by thefirst semiconductor optical amplifying device and the second semiconductor opticalamplifying device to be input to a first input port and a second input port of the secondoptical coupler, respectively. Third light is output from an output port of the secondoptical coupler.
申请人：FUJITSU LIMITED,National Institute of Advanced Industrial Science andTechnology
地址：Kawasaki JP,Tokyo JP
国籍：JP,JP
代理机构：Kratz, Quintos & Hanson. LLP
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