A SINGLE FIBER BIDIRECTIONAL OPTICAL ELEMENT AND WORKING METHOD THEREOF

摘要

A single fiber bidirectional optical element and working method thereof, the single fiber bidirectional optical element comprises a laser (11), a wavelength division multiplex (WDM) filter (12) and a receiver (13). The laser (11) is used for emitting an emitting light. The WDM filter (12) is used for transmitting the emitting light through the fiber, and receiving a receiving light through the fiber, and transmitting the receiving light to the receiver (13). The single fiber bidirectional optical element further comprises: a cut-off filter (14) arranged between the WDM filter (12) and the receiver (13), for filtering the interference light from the receiving light transmitted by WDM filter (12), and transmitting the filtered receiving light to the receiver (13). The single fiber bidirectional optical element and working method thereof avoid interference of the interference light, and increase the performance of anti-interference.