Optical amplifier arranged to offset Raman gain

Details Optical amplifier arranged to offset Raman gain Optical amplifier arranged to offset Raman gain

1999-03-08

2000-07-11

Moskowitz, Nelson

Optical: systems and elements

Optical amplifier

Raman or brillouin process

359124, 359174, H01S 310, H01S 3108, H01S 330

Patent

active

060881526

ABSTRACT:
An optical amplifier is adapted to cancel the Raman gain of an optical transmission path that degrades those optical signals occupying the low end of the bandwidth such that the power is transferred from the latter signals to the optical signals occupying the high end of the bandwidth. More specifically, the optical amplifier adjusts the gain that it applies to the optical signals so that it favors the signal components at the low end of the bandwidth.

REFERENCES:
patent: 5999548 (1999-12-01), Mori et al.
Hansen et al, OFC '98 Tech. Digest, vol. 2, pp. 31-33, Feb. 27, 1998.
Masuda et al, Electronics Letters, vol. 34, #13, 2 pp., Jun. 25, 1998.
Masuda et al, Electronics Letters, vol. 33, #9, pp. 753-754, Apr. 24, 1997.
Sun et al, Bell Labs Tech. Journ., vol. 4, #1, pp. 187-206, Mar. 1999.
Compensation of Raman Scattering and EDFA's Nonuniform Gain in Ultra-Long Distance WDM links--Jan. 1996.

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