Coherent light generators – Optical fiber laser
Patent
1997-06-18
2000-03-21
Sanghavi, Hemang
Coherent light generators
Optical fiber laser
372 20, 372102, 385 37, H01S 330
Patent
active
060410698
ABSTRACT:
A resonant laser device including first and second reflectors defining an optical cavity with given optical resonance characteristics. The laser device including a laser active material in a first optical fiber disposed between the reflectors in the cavity and a second photosensitive optical fiber coupled to the cavity. One of the reflector being a refractive index grating formed in the second fiber such that the laser operates with a selected predetermined wavelength and the laser being tuned to a different wavelength by exposing the second fiber to a second spatially periodic pattern of optical radiation such that the second pattern becomes recorded in the second optical fiber.
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Armitage Jonathan Richard
Kashyap Raman
British Telecommunications public limited company
Sanghavi Hemang
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