Fiber optic ring laser

Details Fiber optic ring laser Fiber optic ring laser

1994-11-30

1995-11-21

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Tuning

372 27, 372 6, 372 94, 372703, H01S 310

Patent

active

054694558

ABSTRACT:
The present invention relates to a tuneable ring laser with an output having a fixed, stable linear state of polarization with a fixed and known azimuth. The state of polarization at the output is fixed by careful splice and component orientation that compensates for component birefringence of the various ring elements that alter the polarization state and azimuth. Further, such polarization transformation is minimized by careful deployment of the non-polarization component.

REFERENCES:
patent: 4923291 (1990-05-01), Edagawa et al.
patent: 4949345 (1990-08-01), Luijtjes
patent: 4949358 (1990-08-01), Kantorski et al.
patent: 5056096 (1991-10-01), Baker et al.
patent: 5132976 (1992-07-01), Chung et al.
patent: 5239607 (1993-08-01), da Silva et al.
patent: 5243609 (1993-09-01), Huber
patent: 5274659 (1993-12-01), Harvey et al.
IEEE Photonics Technology Letters; "Electronically Tuneable Liquid-Crystal-Etalon Filter For High-Density WDM Systems"; M. W. Maeda et al. vol. 2, No. 11, Nov. 1990.
Electronics Letters; "Pigtailed High-Finesse Tunable Fibre Fabry-Perot Interferometers With Large, Medium and Small Free Spectral Ranges", J. Stone et al., vol. 23, Jul. 1987.

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