Method of operating and optimising a WDM transmission system...

Details Method of operating and optimising a WDM transmission system... Method of operating and optimising a WDM transmission system...

2007-04-09

2010-12-07

Curs, Nathan M (Department: 2613)

Optical communications

Transmitter and receiver system

Including optical waveguide

C398S029000, C398S159000

Reexamination Certificate

active

07848656

ABSTRACT:
A method of operating a WDM transmission system with at least one transmitter and at least one receiver connected by means of a dispersive transmission line. The proposed method comprises the successive steps of successively: a) setting a tunable dispersion pre-compensation value at a transmitter-side Tunable Dispersion Compensation Module in operative connection with the transmitter to a first predetermined value (PRE°); b) setting or adjusting a tunable dispersion post-compensation value at a receiver-side Tunable Dispersion Compensation Module (7) in operative connection with the receiver to a second value (POST°) in order to optimize at least one characteristic (monitored performance like BER, eye opening, Q factor BER) of a transmitted signal at the receiver; and then c) simultaneously tuning the transmitter-side Tunable Dispersion Compensation Module and the receiver-side Tunable Dispersion Compensation Module with opposite respective dispersion shifts in order to further optimize said characteristic of the transmitted signal.

REFERENCES:
patent: 5717510 (1998-02-01), Ishikawa et al.
patent: 6889347 (2005-05-01), Adams et al.
patent: 2004/0114936 (2004-06-01), Sugihara et al.
patent: 1365529 (2003-11-01), None
patent: 1431785 (2004-06-01), None

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