Optical fiber transmission system and supervision method of the

Details Optical fiber transmission system and supervision method of the Optical fiber transmission system and supervision method of the

1993-02-26

1996-03-19

Couso, Jose L.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359177, 359160, 359110, H04B 1002

Patent

active

055007562

ABSTRACT:
An optical repeater for realizing transmission of supervisory information of an optical fiber transmission system without the output power of an optical fiber amplifier being reduced, wherein a supervisory optical transmitter and optical receiver with a wavelength which is similar to the wavelength of the pumping light source of the optical fiber amplifier are mounted, and on the input side of the optical repeater, pumping light is multiplexed in the forward direction and a supervisory optical signal, which is multiplexed in wavelength and transmitted, is demultiplexed simultaneously by the first wavelength multi- and demultiplexer and they are received by the supervisory optical receiver, and on the output side of the optical repeater, pumping light is muitiplexed in the reverse direction and a supervisory optical signal outputted from the supervisory optical transmitter is multiplexed by the second wavelength multi- and demultiplexer.

REFERENCES:
patent: 5115338 (1992-05-01), Digiovanni
patent: 5229876 (1993-07-01), Fatehi et al.
patent: 5274496 (1993-12-01), Fujiwara et al.
patent: 5299048 (1994-03-01), Suyama
Shinji Matsuoka, et al., "Supervisory Signal Transmission Method for Optical Amplifier Repeater System", IEEE, 1990, pp. 1846-1850.

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