Patent ID: 6058227
Filing Date: 2000-05-02
Classification: H04J,H04Q

Abstract:
A circuit switch for routing a plurality of signals, said circuit switch comprising:a signal combining device receiving a first optical input signal at a first wavelength and a second optical input signal at a second wavelength and combining said first optical signal and said second optical signal into an optical output signal using wavelength division multiplexing;an equalizer for receiving said optical output signal from said combining device;an amplifier for receiving said optical output signal from said equalizer and amplifying said optical output signal, said equalizer serving to pre-compensate for non-flat gain response characteristics of said amplifier;a splitting device receiving said optical output signal from said combining device and broadcasting a plurality of said optical output signals; andat least two optical receivers, each receiving one of said optical output signals from said splitting device, whereby at least one of said optical receivers selects at least one of said first optical input signal and said second optical input signal by tuning to its wavelength.