Patent ID: 6058131
Filing Date: 2000-05-02
Classification: H01S

Abstract:
A laser source comprisinga laser diode having an output intensity peaking at an operating wavelength, said operating wavelength responsive to a first control signal;first and second fiber Bragg gratings coupled to said laser diode, said first fiber Bragg grating having a maximum reflectivity at a first wavelength, said second fiber Bragg grating having a maximum reflectivity at a second wavelength displaced from said first wavelength, each of said first and second fiber Bragg gratings generating a feedback signal responsive to said maximum reflectivity of said fiber Bragg grating and said output intensity of said laser diode, said first and second fiber Bragg gratings are fixed to a temperature-control unit, said temperature-control unit responsive to a second control signal; anda controller connected to said laser diode and generating said first control signal responsive to said feedback signals from said first and second fiber Bragg gratings and said second control signal to maintain said operating wavelength of said laser diode at a selected wavelength between said first and second wavelengths.