Wdm optical communication system using co-propagating raman...

Details Wdm optical communication system using co-propagating raman... Wdm optical communication system using co-propagating raman...

H - Electricity

04

J

H04J 14/02 (2006.01) H01S 3/30 (2006.01) H04B 10/17 (2006.01) H01S 3/067 (2006.01) H01S 3/094 (2006.01)

Patent

CA 2366250

The use of a co-propagating fiber Raman amplifier in an optical WDM transmission system has been found to be practical in the situation where the fiber amplifier is operated into depletion and the characteristics of the input signals are controlled to exhibit a reduced integrated relative intensity noise (RIN) over the fiber crosstalk bandwidth. In particular, the reduction in the integrated RIN can be achieved by increasing the number of input channels (by adding more messages or simply using dummy channels), encoding the data in a particular fashion to reduce the integrated RIN, or decorrelating the plurality of N input signals below a predetermined, relatively low frequency (for example, 2MHz).

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