Patent ID: 6600852
Filing Date: 2003-07-29
Classification: G02F,H04Q

Abstract:
A device for wavelength selective phase control of a signal at a predetermined wavelength comprised in a wavelength multiplexed optical signal, said device comprising:an input port for inputting the wavelength multiplexed optical signal; a splitting means for splitting the input wavelength multiplexed optical signal into the signal at the predetermined wavelength and a signal comprising substantially the remaining wavelengths in the multiplex, wherein said splitting means includes an MMI coupler and a Bragg grating; a phase control means for phase control of one of the two split signals; a combining means for combining the split phase-controlled signal and the other split signal to achieve a wavelength multiplexed wavelength selectively phase-controlled optical signal, wherein said combining means includes an MMI coupler and a Bragg grating; and an output port for outputting the wavelength multiplexed wavelength selectively phase-controlled optical signal.