Method for optical amplification and system for carrying out the

Details Method for optical amplification and system for carrying out the Method for optical amplification and system for carrying out the

1998-01-12

2000-08-01

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359124, H01S 300

Patent

active

060975350

ABSTRACT:
A method and system for optical amplification suitable for wavelength division multiplexing (WDM). Signal light is amplified to obtain amplified signal light. The amplified signal light is gain equalized so that a deviation in signal-to-noise ratio of the amplified signal light with respect to wavelength is reduced to obtain first equalized signal light. The first equalized signal light is amplified to obtain amplified equalized signal light. The amplified equalized signal light is gain equalized so that a deviation in signal power of the amplified equalized signal light with respect to wavelength is reduced. This method is characterized in that in performing optical amplification of signal light plural times gain equalization is performed in the middle stage of the optical amplification so that the deviation in signal-to-noise ratio is reduced, and gain equalization is performed after the final stage of the optical amplification so that the deviation in signal power is reduced. According to this method, gain equalization can be easily performed on both the deviation in signal power and the deviation in signal-to-noise ratio.

REFERENCES:
patent: 5406404 (1995-04-01), DiGiovanni et al.
patent: 5541766 (1996-07-01), Mizrahi et al.
patent: 5583689 (1996-12-01), Cassidy et al.
patent: 5872650 (1999-02-01), Lee et al.
patent: 5912750 (1999-06-01), Takeda et al.
N. Bergano, "Wavelength Division Multiplexing in Long-Haul Transmission Systems"; Journal of Lightwave Technology, vol. 14, No. 6, Jun. 1996, pp. 1299-1308.
K. Oda, et al., "128 Channel, 480km FSK-DD Transmission Experiment Using 0.98.mu.m Pumped Erbium-doped Fibre Amplifiers and a Tunable Gain Equaliser"; Electronics Letters, vol. 30, No. 12, Jun. 1994, pp. 982-983.
T. Naito, et al., "85-Gb/s WDM Transmission Experiment Over 7931km Using Gain Equalization to Compensate for Asymmetry in EDFA Gain Characteristics"; First Optoelectronics and Communications Conference Technical Digest, Jul. 1996, pp. 4-5.

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