Amplified telecommunication system for wavelength-division multi

Details Amplified telecommunication system for wavelength-division multi Amplified telecommunication system for wavelength-division multi

1998-11-09

2000-02-15

Hellner, Mark

Optical: systems and elements

Optical amplifier

Optical fiber

359124, H04J 1402, H01S 300

Patent

active

06025954&

ABSTRACT:
An optical telecommunication system including a transmitting station and a receiving station for optical signals, connected with each other by an optical fiber line including optical line amplifiers having a rare-earth-doped active fiber and connected in series, in which the transmitting station includes signal generator for generating signals at several wavelengths, and connections for conveying the signals to a single optical fiber line. The optical signal receiving station includes apparatus for separating the signals. At least one of the optical line amplifiers has dopants, fiber length and pumping power capable of determining, at the input of the receiving station, an optical signal
oise ratio which for the different wavelengths has a difference less than 2 dB, and for each signal is greater than 15 dB.

REFERENCES:
patent: 5504609 (1996-04-01), Alexander et al.
patent: 5715076 (1998-02-01), Alexander et al.
patent: 5726784 (1998-03-01), Alexander et al.
IEICE Transactions of Communications, vol. E77-B, No. 4, Apr. 1994, Tokyo JP--pp. 449-453.
IEEE Photonics Technology Letters, vol. 6, No. 2, Feb. 1994, New York, U.S., pp. 266-269.
Journal of Optical Communications, vol. 14, No. 5, Oct. 1993, Berlin DE, pp. 179-182.
Database Inspec, IEE, London, GB, Lee et al.--Inspec. Nr. 4720970 & Proceedings IEEE Infocom '94 vol. 2, pp. 946-953 & Abstract.

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