| 摘要 |
The present invention relates to a device for wavelength selective phase control of a signal at a predetermined wavelength in a wavelength multiplexed optical signal, which comprises 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 predetermiend wavelength and a signal comprising of substantially the remaining wavelengths in the multiplex, a phase control element for phase control of one of the two splitted signals, a combining device for combining the splitted phase-controlled signal and the other splitted signal in order to achieve a wavelength multiplexed wavelength selectively phase-controlled optical signal, and an output port for outputting the wavelength multiplexed wavelength selectively phase-controlled optical signal. A switch comprising at least one device of said kind and a method for wavelength selective phase control are likewise comprised in the present invention. |
