发明授权
- 专利标题： In-phase and quadrature pattern alignment for quadrature phase shift keying optical transmitters
- 专利标题（中）： 用于正交相移键控光发射机的同相和正交模式对准
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申请号： US13078816申请日： 2011-04-01
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公开(公告)号： US08428183B2公开(公告)日： 2013-04-23
- 发明人: Sunil Kumar Singh Khatana , Edem Ibragimov
- 申请人： Sunil Kumar Singh Khatana , Edem Ibragimov
- 申请人地址： US CA San Jose
- 专利权人： Opnext Subsystems, Inc.
- 当前专利权人： Opnext Subsystems, Inc.
- 当前专利权人地址： US CA San Jose
- 代理机构： Fenwick & West LLP
- 主分类号： H04L27/20
- IPC分类号： H04L27/20
摘要：
I/Q data skew in a QPSK modulator may be detected by sending identical or complementary data streams to I and Q channel PSK modulators, setting the relative carrier phase between I and Q to zero or π, and monitoring the average QPSK output power, where the data streams sent to the I and Q channels include pseudorandom streams of ones and zeroes.
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