An optical receiver including: a preamplifier capable of changing a conversion gain in accordance with a reception level of a received burst signal; a gain control circuit capable of switching between a fast time constant and a slow time constant; and a convergence determination circuit for outputting a time constant switching signal in accordance with a state of the gain control circuit (transient state or steady state) and a reset signal between the burst signals. This configuration can switch the time constant of the gain control circuit at an appropriate timing.
申请公布号
US2013343769(A1)
申请公布日期
2013.12.26
申请号
US201114003139
申请日期
2011.04.05
申请人
NODA MASAKI;NOGAMI MASAMICHI;NAKAGAWA JUNICHI;MITSUBISHI ELECTRIC CORPORATION