Apparatus for controlling decision threshold voltage to optical receiver

摘要: Disclosed herein is an apparatus for controlling a decision threshold voltage to optical receiver, which capable of automatically the receiver appropriately signal level on basis low-frequency band component output from receiver. The adapted control converts input into electrical signal. To this end, comprises detector branching off part and detecting corresponding voltage, differential comparator comparing detected by with reference inputted thereto outputting resulting low pass filter filtering at predetermined frequency supplying as controller between minimum bit error rate.