发明授权
- 专利标题： Optical multi/demultiplexer and optical module using the same
- 专利标题（中）： 光学多路复用器和光模块使用相同
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申请号： US204551申请日： 1988-03-23
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公开(公告)号： US4909584A公开(公告)日： 1990-03-20
- 发明人: Katsuyuki Imoto , Hirohisa Sano , Hideaki Tsushima
- 申请人： Katsuyuki Imoto , Hirohisa Sano , Hideaki Tsushima
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-301258 19861219; JPX62-50037 19870306; JPX62-56506 19870313
- 主分类号： G02B6/125
- IPC分类号： G02B6/125 ; G02B6/28 ; G02B6/34 ; H04B10/25
摘要：
This invention relates to an optical multi/demultiplexer which will be useful for optical wavelength-division multiplexing communication using an optical fiber.In order to obtain high isolation, the optical multi/demultiplexer of the present invention constitutes three, mutually the same optical multi/demultiplexers by use of a main waveguide and first, second and third branch waveguides. Two rays of light having mutually different wavelenths, which are incident into the main waveguide, are isolated completely by the three optical multi/demultiplexers and are outputted.
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