发明授权
US5323406A Photonic mixer for photonically multiplying two electrical signals in
two optically interconnected interferometric modulators operated at
modulation outside the linear range
失效
光子混合器，用于在两个光学互连的干涉式调制器之间进行光子倍增，在线性范围外的调制下工作
- 专利标题： Photonic mixer for photonically multiplying two electrical signals in two optically interconnected interferometric modulators operated at modulation outside the linear range
- 专利标题（中）： 光子混合器，用于在两个光学互连的干涉式调制器之间进行光子倍增，在线性范围外的调制下工作
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申请号： US970752申请日： 1992-11-02
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公开(公告)号： US5323406A公开(公告)日： 1994-06-21
- 发明人: Ting K. Yee , James F. Coward , Peter H. Chang
- 申请人： Ting K. Yee , James F. Coward , Peter H. Chang
- 专利权人： Yee Ting K,Coward James F,Chang Peter H
- 当前专利权人： Yee Ting K,Coward James F,Chang Peter H
- 主分类号： G02F1/225
- IPC分类号： G02F1/225 ; G02F2/00 ; H01S5/0687 ; H01S3/13
摘要：
A Mach-Zehnder modulator (MZM), which divides a CW laser beam into two optical portions, is biased at a 180.degree. phase difference between the two optical portions. An RF signal and an LO signal are simultaneously applied to one of the optical portions of the laser beam to produce phase changes between the two optical portions. The two optical portions of the laser beam are then recombined into an optical output beam, which is detected by a photodetector. The photodetector generates a photocurrent, which contains a component at a beat frequency--i.e., the frequency difference between the RF and LO frequencies. The waveform of the photocurrent component at the beat frequency is substantially the same (except for amplitude and a fixed phase shift) as the waveform of the RF signal.
公开/授权文献
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