Patent ID: 6411634
Filing Date: 2002-06-25
Classification: G02B,H01S,H04B

Abstract:
A wavelength locker comprising:a partial reflector for receiving an optical signal, for transmitting a first portion of the optical signal, and for reflecting a second portion of the optical signal; a first filter for receiving the first portion of the optical signal from the partial reflector and transmitting a third portion of the optical signal, the first filter including a first axis, the first filter capable of being tuned by rotation around the first axis to transmit the third portion of the optical signal including a particular wavelength; a second filter for receiving the third portion of the optical signal and transmitting a fourth portion of the optical signal, the second filter further including a second axis substantially perpendicular to the first axis, the second filter capable of being tuned by rotation around the second axis to transmit the fourth portion of the optical signal including the particular wavelength; and means for comparing the second portion of the optical signal to the fourth portion of the optical signal.