Communications system

Details Communications system Communications system

1994-07-01

1996-01-16

Boudreau, Leo H.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359177, 359160, 359341, H04B 1017

Patent

active

054852994

ABSTRACT:
In an amplified optical fibre transmission system the light received level at an optical fibre amplifier following transmission from a terminal is directly detected with minimum loss at the amplifier by means of a WDM/SKEW coupler, a detector and a pump source for the amplifier which is modulated in an on-off chopped manner. The received light level is measured at the detector when the pump is off.

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patent: 5115338 (1992-05-01), DiGiovanni et al.
patent: 5128801 (1992-07-01), Jansen et al.
patent: 5185814 (1993-02-01), Healey
patent: 5299048 (1994-03-01), Suyama
patent: 5355248 (1994-10-01), Hadjifotiou
patent: 5363385 (1994-11-01), Heidemann
patent: 5367587 (1994-11-01), Mizuochi et al.

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