H - Electricity – 03 – G
Patent
H - Electricity
03
G
H03G 3/20 (2006.01) H04B 10/17 (2006.01)
Patent
CA 2312139
A method and apparatus for determining control signals of a filter for optimisation of the gain profile of an amplifier, particularly though not exclusively for use in optical communications systems, and a system incorporating the same. The method is for calculating at least one control signal for at least one periodic filter arranged to alter the output gain profile of an amplifier, in which at least one of the phase and amplitude of the filter response are tuneable. The method includes the steps of: determining an error profile from the amplifier output gain profile and a predetermined target output gain profile; determining the dot product of the error profile and a first function of similar period and form to the response of the filter; determining the dot product of the error profile and a second function of similar period and form to the response of the filter, said second function being substantially orthogonal to said first; and determining at least one control signal for tuning of said filter from the calculated dot products.
King Jonathan
Parry Simon
Robinson Alan
Nortel Networks Corporation
Nortel Networks Limited
Smart & Biggar
LandOfFree
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