High-accuracy wavelength stabilization of angled-stripe super lu

Details High-accuracy wavelength stabilization of angled-stripe super lu High-accuracy wavelength stabilization of angled-stripe super lu

1989-11-06

1991-04-16

Gonzalez, Frank

Coherent light generators

Particular beam control device

Optical output stabilization

372 45, 372 50, 350 9615, 350 9629, 357 17, H01S 313

Patent

active

050088890

ABSTRACT:
An angled-stripe superluminescent laser diode (SLD) light source emits both coherent and incoherent radiation simultaneously, but the two beams are separated spatially. A method and apparatus for stabilizing the emission wavelength of a broadbent light source for a fiber-optic rotation-sensing gyro uses the coherent radiation from an angled-stripe SLD as the optical source in a large-optical-pathlength-difference interferometer to generate an error signal which is fed back to the current source of the SLD to stabilize the wavelength of the incoherent part of the SLD light output.

REFERENCES:
patent: 4603421 (1986-06-01), Seifres et al.
patent: 4799229 (1989-01-01), Miyazawa et al.
patent: 4821277 (1989-04-01), Alphonse et al.
patent: 4842358 (1989-06-01), Hall
patent: 4856014 (1989-08-01), Figueroa et al.
patent: 4901123 (1990-02-01), Noguchi et al.

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