Optical fiber amplifier and optical fiber transmission apparatus

Details Optical fiber amplifier and optical fiber transmission apparatus Optical fiber amplifier and optical fiber transmission apparatus

1995-08-22

1997-01-28

Healy, Brian

Optical waveguides

With optical coupler

Plural

385123, 385141, 385142, 372 6, 359341, 359345, 359115, 359124, G02B 628, H01S 330

Patent

active

055984916

ABSTRACT:
The optical fiber amplifier includes a rare earth doped optical fiber and a pumping light source for outputting pumping light for pumping the rare earth doped optical fiber, the optical fiber amplifier optically amplifying signal light received at an input end and outputting the amplified signal light from an output end, wherein the optical fiber amplifier further includes an optical fiber resonator for laser-oscillating a portion of light of spontaneous emission generated in the rare earth doped optical fiber, which has a wavelength shorter than the wavelength of the signal light, thereby to keep a gain substantially fixed independent of a variation in the wavelength of the signal light.

REFERENCES:
patent: 5239607 (1993-08-01), da Silva et al.
patent: 5253104 (1993-10-01), Delavaux
patent: 5260823 (1993-11-01), Payne et al.
patent: 5373526 (1994-12-01), Lam et al.

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