Dual-stage low power optical amplifier

Details Dual-stage low power optical amplifier Dual-stage low power optical amplifier

1992-12-02

1994-01-18

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

372 6, 359344, H01S 330, G02C 626

Patent

active

052803830

ABSTRACT:
A two-stage optical fiber amplifier requiring substantially reduced power comprises a pre-amplifier first-stage operating in the linear region within the small signal limits, and a post-amplifier second-stage operating in a saturated regime providing significant gain compression. The pump power for the pre-amp stage is minimized, and all of the gain compression occurs in the second stage. Minimum pump power and the corresponding amplifier fiber length needed to achieve a predetermined optimum amount of small signal gain required in a given amplifier application may be achieved in variations of the design.

REFERENCES:
patent: 5050949 (1991-09-01), Giovanni et al.
patent: 5117303 (1992-05-01), Desurvire et al.
patent: 5177634 (1993-01-01), Way
Yamamoto et al., Opt. Quantum Electronics, vol. 21, spec. issue, pp. 75-88, 1989; abstract only provided.
Masuda et al., Electronics Letters, vol. 10, May 1, 1990, pp. 26-27.
Smart et al., IEEE Photonics Techn. Lett., vol. 4, #11, pp. 1261-1264, Nov. 1992; abst. only provided.
Righetti et al., Proc. ECOC, 1989, PDA-10, pp. 42-46.

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