Patent ID: 8306417
Filing Date: 2012-11-06
Classification: H04B,H04J

Abstract:
1. A bidirectional multiwavelength optical signal routing and amplification module, comprising: an optical coupler for passing first data signals, a first monitoring signal and/or a fault locating signal in the downstream direction, and for coupling second upstream traffic and monitoring signals with second upstream fault locating signals; a dichroic dual-band filter coupled to said optical coupler to direct said first data signals and said first monitoring signal through the L-band channel of said dichroic dual-band filter and said fault locating signal through the C-band channel of said dichroic dual-band filter; a first optical amplifier coupled to said dichroic dual-band filter for amplifying said first data signal or said first monitoring signal; a three-port optical circulator, the first port coupled to said first optical amplifier, the second port coupled to an arrayed waveguide grating; a first optical isolator coupled to said first optical amplifier and said dichroic dual-band filter; a second optical isolator coupled to said third port of said three-port optical circulator; a second optical amplifier coupled to said second optical isolator for amplifying a second data signal and a second monitoring signal; and a four-port optical circulator, the first port coupled to said second optical amplifier, the second port coupled to said dichroic dual-band filter, the third port coupled to said a switching array for routing said fault locating signal, the fourth port coupled to said optical coupler.