发明公开
- 专利标题： COHERENT OPTICAL MIXER CIRCUIT
- 专利标题（中）： 相干光混频器电路
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申请号： EP16802791.0申请日： 2016-05-27
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公开(公告)号： EP3306386A1公开(公告)日： 2018-04-11
- 发明人: KAMEI, Shin , JIZODO, Makoto , FUKUDA, Hiroshi , KIKUCHI, Kiyofumi , TSUZUKI, Ken
- 申请人： Nippon Telegraph And Telephone Corporation
- 申请人地址： 5-1 Otemachi 1-chome Chiyoda-ku, Tokyo 100-8116 JP
- 专利权人： Nippon Telegraph And Telephone Corporation
- 当前专利权人： Nippon Telegraph And Telephone Corporation
- 当前专利权人地址： 5-1 Otemachi 1-chome Chiyoda-ku, Tokyo 100-8116 JP
- 代理机构： TBK
- 优先权： JP2015110769 20150529
- 国际公布： WO2016194349 20161208
- 主分类号： G02F2/00
- IPC分类号： G02F2/00 ; G02B6/00 ; G02B6/125 ; G02B6/126
摘要：
A coherent optical mixer circuit is provided that can measure a phase error without requiring a step of cutting away a delay circuit. Odd-numbered or even-numbered two of four inputs of an 4-input-and-4-output multimode interference circuit are connected to an input mechanism. The four outputs of the multimode interference circuit are all connected to an output mechanism to the exterior. Other two inputs of the multimode interference circuit are connected to two monitor waveguides. One of the monitor waveguide is longer than the other to configure a light delay circuit. The monitor waveguides constituting the light delay circuit are connected to the respective outputs of a 2-branched light splitter. The 2-branched light splitter has an input connected to a monitor light input mechanism from the exterior via a monitor input waveguide.
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