Rare earth element-doped optical fiber amplifier

Details Rare earth element-doped optical fiber amplifier Rare earth element-doped optical fiber amplifier

1996-04-09

1998-01-06

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Optical fiber

359134, 385115, H01S 330, G02B 626

Patent

active

057061246

ABSTRACT:
An Er-doped multiple-core optical fiber amplifier has an Er-doped multiple-core optical fiber. A signal light of 1.5 .mu.m wavelength band is input through an optical isolator at front stage, and excitation lights of 0.98 .mu.m or 1.48 .mu.m wavelength emitted from excitation light sources are injected through a WDM coupler at front stage and a WDM coupler at rear stage, respectively. An amplified signal light is output through optical isolator at rear stage. A length L.sub.M of the Er-doped multiple-core optical fiber is set to obtain a substantially maximum saturated output power of the amplified signal light.

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Lidgard et al, Appl. Phys. Lett., vol. 56, #26, Jun. 25, 1990, pp. 2607-2609.
Aoki et al, IOOC-ECEC '91, Sep. 9, 1991 Paris France. Abst. Only Herewith.
Delavaux et al, Electron. Lett. (UK), vol. 281 #17, pp. 1642-1643, Aug. 13, 1992, Abst. Only Herewith.

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