发明名称 |
INTERFEROMETER, DEMODULATOR, AND OPTICAL COMMUNICATION MODULE |
摘要 |
When designing a demodulator for a DPSK-modulated signal, it is required that optical phase modulation is performed fast and the demodulator has a long lifetime. To achieve this object, a delay line interferometer inside the demodulator performs adjustment of phase difference between two split lights caused to interfere, using a first optical phase modulation unit such as a Piezo actuator and a second optical phase modulation unit such as a heating element that operates slower in modulation speed than the first optical phase modulation unit and is slower in deterioration speed.
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申请公布号 |
US2011188850(A1) |
申请公布日期 |
2011.08.04 |
申请号 |
US20110985385 |
申请日期 |
2011.01.06 |
申请人 |
OPNEXT JAPAN, INC. |
发明人 |
MIKAMI HIDEHARU;KOGURE TAICHI |
分类号 |
H04B10/08;G01B9/02;G02B26/06;G02F1/01 |
主分类号 |
H04B10/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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