Optical: systems and elements – Optical amplifier – Optical fiber
Patent
1997-12-29
2000-01-18
Moskowitz, Nelson
Optical: systems and elements
Optical amplifier
Optical fiber
359134, 359160, 372 6, H01S 3094, G02B 628
Patent
active
06016218&
ABSTRACT:
An optical fiber amplifier is disclosed including: an optical line through which an optical signal is transmitted; a rare-earth-doped fiber, doped with a predetermined rare earth ion, being set on the optical line; a pumping light beam source for generating a pumping light beam having a predetermined wavelength; a first multiplexer for coupling the pumping light beam to the optical line; a second multiplexer for dividing the pumping light beam outputted from the rare-earth-doped fiber; and pumping light beam looping means for looping the pumping light beam divided by the second multiplexer back to the rare-earth-doped fiber. The residual pumping light beam outputted from the rare-earth-doped pumping light beam is looped back by the feedback loop or reflection loop, to be reprovided to the rare-earth-doped fiber through the multiplexer. Accordingly, it is possible to reduce the length of the rare-earth-doped fiber remarkable, compared to the conventional case, and prevent the residual pumping light from being transmitted through the optical line.
REFERENCES:
patent: 5140456 (1992-08-01), Huber
patent: 5185826 (1993-02-01), Delavaux
patent: 5218608 (1993-06-01), Aoki
patent: 5696615 (1997-12-01), Alexander
patent: 5745283 (1998-04-01), Inagaki et el.
patent: 5808786 (1998-09-01), Shibuya
Becker et al., IEEE Photonics Technology Letters, vol. 2, #1, pp. 35-37, Jan. 1990.
Aoki et al, IOOC-CCOC 1991 Arf. pp. 585-587, Sep. 12, 1991.
Mutsuda et al, IEICE, Spring Convention, paper. No. 4, C-297, pp. 1-5, 1993.
Delavaux et al, Electronics Letters, vol. 28, #7, pp. 1642-1643; Aug. 13, 1992.
Choi Bong Su
Jo Sung Chil
Daewoo Telecom Ltd.
Lilling Bruce E.
Moskowitz Nelson
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