Optical amplification repeating system

Details Optical amplification repeating system Optical amplification repeating system

1993-02-01

1994-01-25

Hellner, Mark

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359177, H04B 1008

Patent

active

052820742

ABSTRACT:
Disclosed is an optical amplification repeating system having at least one repeater disposed in the middle of an optical transmission line connecting two terminal stations in which a light beam output from an optical amplifier is split into at least two split beams, one of the split beams is converted into an electric signal by optical/electrical conversion and the signal-to-noise ratio is detected on the basis of the electric signal. With such arrangement, the signal-to-noise ratio in the repeater can be measured in an in-service state, i.e., while the system is in operation.

REFERENCES:
patent: 4313224 (1982-01-01), Wakabayashi et al.
patent: 4710976 (1987-12-01), Wakabayashi et al.
patent: 4971417 (1990-11-01), Krinsky et al.
patent: 5162936 (1992-11-01), Taga et al.

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