Maintenance of optical networks

Details Maintenance of optical networks Maintenance of optical networks

H - Electricity

04

B

H04B 10/02 (2006.01) H04B 10/08 (2006.01)

Patent

CA 2190548

An apparatus is provided for adding a dither signal to an optical carrier modulated with an information signal. The apparatus includes a dithering elementhaving 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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