Doped fiber amplifier using bidirectional pumping with pump ligh

Details Doped fiber amplifier using bidirectional pumping with pump ligh Doped fiber amplifier using bidirectional pumping with pump ligh

1998-06-16

2000-03-14

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Correction of deleterious effects

359341, 359160, H04B 1016, H01S 316, G02B 628

Patent

active

060380616

ABSTRACT:
A doped fiber amplifier which provides bidirectional pumping to amplify a signal light, and reduces instability of gain caused by the bidirectional pumping. The doped fiber amplifier includes a rare earth element doped optical fiber, a first light source and a second light source. The optical fiber has first and second ends, with the signal light propagating through the optical fiber from the first end to the second end. The first light source provides pump light which propagates in the optical fiber from the first end to the second end and is at a first wavelength. The second light source provides pump light which propagates in the optical fiber from the second end to the first end and is at a second wavelength. The first wavelength is different from the second wavelength. The pump light provided by the first and second light sources causes the signal light to be amplified as the signal light propagates through the optical fiber.

REFERENCES:
patent: 5497264 (1996-03-01), Bayart et al.
patent: 5510926 (1996-04-01), Bayart et al.
patent: 5664131 (1997-09-01), Sugiya
patent: 5764404 (1998-06-01), Yamane et al.
Lipka, et al; Electronics Letters, vol. 30, #23, pp. 1940-1941; abstract only herewith, Nov. 10, 1994.

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