Wavelength stabilization of laser source using fiber Bragg grati

Details Wavelength stabilization of laser source using fiber Bragg grati Wavelength stabilization of laser source using fiber Bragg grati

1997-11-17

2000-05-02

Bovernick, Rodney

Coherent light generators

Particular resonant cavity

Specified cavity component

372 34, H01S 308

Patent

active

06058131&

ABSTRACT:
A laser source with an extremely stable output is provided. A laser diode has an output intensity centered at a peak wavelength which is responsive to a control signal. First and second fiber Bragg gratings are coupled to the laser diode. The first fiber Bragg grating having a reflectivity centered about a first wavelength and the second fiber Bragg grating having a reflectivity centered about a second wavelength different from the first wavelength. Each of the first and second fiber Bragg gratings generates a feedback signal responsive to the reflectivity of the fiber Bragg grating and the output intensity of the laser diode. A controller connected to the laser diode generates the control signal responsive to the feedback signals from the first and second fiber Bragg gratings so that the peak wavelength of the laser diode is maintained at a fixed wavelength between the first and second wavelengths.

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