| 摘要 |
The present invention discloses an adaptive optical receiving device and a method thereof. Said adaptive optical device includes: a first limiting amplifier and a second limiting amplifier for amplifying signals with smaller amplitude and shaping for output respectively; a first clock data recovery circuit and a second clock data recovery circuit for extracting data and clock from output signals of the first and second limiting amplifiers respectively; a first demultiplexer and signal quality detection circuit and a second demultiplexer and signal quality detection circuit for detecting in real time the signal quality of the output signals of the first and second clock data recovery circuits respectively; a hitless changeover unit for selecting a main channel based on the signal quality from the first and the second demultiplexer and signal quality detection circuits, taking the other channel as a standby channel, and switching between the main channel and the standby channel according to the control signal; a control unit for controlling every component in the main channel and the hitless changeover unit, and controlling every component in the standby channel to optimize its signals in real time.
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