Patent ID: 6233082
Filing Date: 2001-05-15
Classification: G02F,H01S,H04B

Abstract:
An optical transmitter for generating any one of N optical carrier signals for use in a system having M.gtoreq.N optical channels each operating at a different wavelength .lambda..sub.s (s=1, 2 . . . M), comprising:at least one optical source for generating said carrier signals at any one of a multiplicity of N wavelengths .lambda..sub.i (i=1, 2 . . . N), where (1.ltoreq.N.ltoreq.M),a master controller for selecting a particular one of said wavelengths .lambda..sub.i at which said source operates, andan optical modulator for receiving the carrier signal corresponding to said selected wavelength .lambda..sub.i and for impressing information on said received signal, said modulator having a characteristic electronic bandgap corresponding to a wavelength .lambda..sub.g, where (.lambda..sub.i -.lambda..sub.g)=.DELTA..lambda..sub.i, characterized in thatsaid transmitter includes a second controller for minimizing the difference between the actual .DELTA..lambda..sub.i and a predetermined value of .DELTA..lambda..sub.i for all values of i.