公开(公告)号：US20070206964A1

公开(公告)日：2007-09-06

申请号：US11747168

申请日：2007-05-10

申请人： Chang-Hee Lee ,  Sil-Gu Mun

发明人： Chang-Hee Lee ,  Sil-Gu Mun

IPC分类号： H04B10/06

CPC分类号： H04B10/66

摘要： The disclosure relates to an optical receiver having an apparatus for varying decision threshold level and an optical transmission system having the same. An optical receiver having an apparatus for varying decision threshold level includes a photo diode (PD) for receiving an optical signal and transforming the received optical signal into an electrical signal; a trans-impedance amplifier (TIA) for pre-amplifying the electrical signal transformed by the PD; a limiting amplifier (LA) for deciding the electrical signal amplified by the TIA as either level 0 or level 1 and for amplifying the decision signal; a clock and data recovery (CDR) for generating a clock and data from the amplified decision signal by the LA; and a control circuit for adjusting a decision threshold level depending on the received optical signal power by the PD and for providing the adjusted decision threshold level with the LA.

摘要翻译： 本公开涉及一种具有用于改变判定阈值电平的装置的光接收机和具有其的光传输系统。 具有用于改变判定阈值电平的装置的光接收机包括：光电二极管（PD），用于接收光信号并将接收到的光信号变换为电信号; 用于对由PD变换的电信号进行预放大的跨阻抗放大器（TIA）; 限制放大器（LA），用于将由TIA放大的电信号判定为0级或1级，并用于放大判定信号; 用于由LA从放大的判定信号产生时钟和数据的时钟和数据恢复（CDR）; 以及控制电路，用于根据PD接收到的光信号功率调整判定阈值电平，并提供与LA的调整后的判定阈值电平。