Optical amplifier and laser

Details Optical amplifier and laser Optical amplifier and laser

1994-09-20

1995-09-26

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359343, 359345, 372 40, 372 70, H01S 330, G02B 626

Patent

active

054538734

ABSTRACT:
A laser has a resonant cavity defined by a pair of mirrors (6, 10) butted to respective ends of a 3 m fluorozirconate optical fibre (14). The fibre (14) has a .DELTA.n of 0.014 and a cut-off wavelength of around 790 nm and is doped to about 500 ppm (weight) with erbium ions. An optical pump source (12) provides a pump signal at 971 nm which excites the erbium ions into the .sup.4 S.sub.3/2 energy level to provide lasing at about 546 nm. The laser may alternatively be pumped by a pump signal in the band 791 nm to 812 nm, preferably 801 nm. The pump source is preferably a high power semiconductor laser (16).

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patent: 5084880 (1992-01-01), Miller et al.
patent: 5369523 (1994-11-01), Millar et al.
Goh, S. C., The Int. Symp. a Halide Glasses, Australia, Mar. 21, 1991, 5 pgs.
Davey et al., Br. Telecom. Technol., vol. 7, #1, Jan. 1989, p. 584.
Smart et al., Proc. SPIE, Int. Soc. Opt. Eng., vol. 1373, pp. 158-165, Sep. 19, 1990.
Freace et al., Proc. SPIE, Int. Soc. Opt. Eng., Sep. 8, 1989, vol. 1171, pp. 65-71.

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