Patent ID: 8971700
Filing Date: 2015-03-03
Classification: H04B,H04J

Abstract:
1. A bidirectional monitor module, comprising: a 2×2 optical coupler configured to output input light that is input from a first port to a second port and drop the input light input from the first port to a third port and also output input light that is input from the second port to the first port and drop the input light input from the second port to a fourth port; an optical output unit configured to output one of light that is dropped and output from the third port and light that is dropped and output from the fourth port, the optical output unit being a 2×1 optical coupler configured to multiplex input light input from one input port with input light input from another input port to be output; and a monitor unit configured to monitor optical power of the light output from the optical output unit.