External resonator type wavelength- tunable light source

Details External resonator type wavelength- tunable light source External resonator type wavelength- tunable light source

1997-03-19

1999-01-19

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Tuning

372 32, 372 98, 372100, 372102, 372 6, 372 92, H01S 310

Patent

active

058621628

ABSTRACT:
A wavelength-tunable light source is provided, by which an output beam of a stable wavelength can be obtained even if a driving condition of the optical amplifier is changed, and in which stable wavelength tuning without mode hopping can be performed. The light source comprises: an optical amplifier, both end faces thereof being antireflection-processed, for generating a natural emission beam from one end face of the amplifier, and for amplifying a beam input into the one end face and outputting the amplified beam from the other end face of the amplifier; an optical amplifier drive circuit for driving the optical amplifier; an optical resonance reflector for resonating the natural emission beam output from the optical amplifier at an optical resonance wavelength, and reflecting the resonated beam to the one end face of the optical amplifier; a wavelength controller for controlling the optical resonance wavelength of the optical resonance reflector; a resonance length controller for controlling a resonance length of the optical resonance reflector; and a beam outputter for extracting a beam, which was reflected by the optical resonance reflector, amplified by the optical amplifier, and output from the other end face of the optical amplifier, and outputting the extracted beam.

REFERENCES:
patent: 5491714 (1996-02-01), Kitamura
patent: 5493575 (1996-02-01), Kitamura
patent: 5548609 (1996-08-01), Kitamura

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