Optical element power control

Details Optical element power control Optical element power control

1996-09-18

1999-10-19

Lefkowitz, Edward

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359124, 359171, 359176, 359179, H01S 316

Patent

active

059698403

ABSTRACT:
A control system for an optical element such as an optical amplifier in an optical transmission system determines the transmitted optical signal power in each of a plurality of different optical wavelength bands, determines which of the powers is closest to a threshold, and controls an output power of the element, or controls a parameter which affects the threshold, on the basis of the power closest to the threshold. Since there is no longer any need to allow a margin for possible gain variations between different wavelengths, power output can be controlled with reduced upper or lower margins, and thus error rates reduced, or transmission distances increased.

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patent: 5513029 (1996-04-01), Roberts
patent: 5764404 (1998-06-01), Yamane et al.

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