Optical fiber distributed feedback laser

Details Optical fiber distributed feedback laser Optical fiber distributed feedback laser

1996-03-20

1998-12-01

Bovernick, Rodney B.

Coherent light generators

Optical fiber laser

372 96, 385 12, H01S 330

Patent

active

058449272

ABSTRACT:
An optical end-pumped fiber laser doped with one or more rare-earths and with distributed feedback (DFB) via a fiber Bragg-grating, which is oscillating on two orthogonally polarized wavelengths. The distance between the wavelengths may be tuned by changing the birefringence of the fiber. The laser may be applied as a polarimetric sensor in which an asymmetrical force changes the wavelength separation, or as a tunable two-wavelength source. A particular preferred field of application is for measuring the pressure in pipes, to determine the flow.

REFERENCES:
patent: 5091983 (1992-02-01), Lukosz
patent: 5295209 (1994-03-01), Huber
patent: 5305335 (1994-04-01), Ball et al.
patent: 5394488 (1995-02-01), Fernald et al.
patent: 5488475 (1996-01-01), Friebele et al.
patent: 5511083 (1996-04-01), D'Amato et al.
patent: 5623565 (1997-04-01), Blair et al.

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