Maintenance of optical networks

Details Maintenance of optical networks Maintenance of optical networks

1995-12-27

1998-04-28

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359174, 359177, 359179, 359124, H04B 1004, H04B 1016

Patent

active

057452741

ABSTRACT:
An apparatus is provided for adding a dither signal to an optical carrier modulated with an information signal. The apparatus includes a dithering element having an input and an output in series with an optical carrier modulated with an information signal. A differential element having an inverting input, a non-inverting input, and an output is coupled to the input of the dithering element. A signal generator, which is provided for producing a desired dither signal to be added to the modulated optical carrier, is coupled to the non-inverting input of the differential element. A feedback element produces a signal related to the output of the dithering element and couples the signal related to the output of the dithering element to the inverting input of the differential element.

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