发明申请
- 专利标题： OPTICAL SIGNAL DETECTION CIRCUIT AND OPTICAL RECEIVER
- 专利标题（中）： 光信号检测电路和光接收器
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申请号： US13981313申请日： 2012-01-25
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公开(公告)号： US20140016949A1公开(公告)日： 2014-01-16
- 发明人: Hiroshi Koizumi , Masafumi Nogawa , Yusuke Ohtomo
- 申请人： Hiroshi Koizumi , Masafumi Nogawa , Yusuke Ohtomo
- 申请人地址： JP Tokyo
- 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： JP Tokyo
- 优先权： JP2011012736 20110125
- 国际申请： PCT/JP2012/051526 WO 20120125
- 主分类号： H04B10/60
- IPC分类号： H04B10/60
摘要：
An optical signal detection circuit (10) includes an amplification circuit (11) that differentially amplifies an electrical signal (Tout) corresponding to the pulse train of an optical signal (Pin) and outputs a differential output signal (Aout), and a comparator (12) that compares the voltage value of the positive-phase signal of the differential output signal (Aout) with the voltage value of the negative-phase signal and outputs a pulsed comparison output signal (Cout) corresponding to the comparison result. The amplification circuit (11) includes a current addition circuit (11E) that adjusts a DC load current to generate a positive-phase signal (Aout+) and a negative-phase signal (Aout−) of the differential output signal (Aout) in accordance with an adjusted voltage value from an external adjusted voltage source (Vadj) and adjusts the DC bias of the positive-phase signal (Aout+) and the DC bias of the negative-phase signal (Aout−).
公开/授权文献
- US09160458B2 Optical signal detection circuit and optical receiver 公开/授权日：2015-10-13
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