Apparatus for optical wavelength conversion

Abstract

An optical wavelength converting apparatus for use with a light source providing a light beam having a wavelength λ, the apparatus comprises an optical wavelength conversion module and a wavelength controller. The optical wavelength conversion module comprises at least two optical modulators each capable of being coupled to the light source and respectively capable of modulating the light beam to a first modulated light beam including a pair of channel having wavelengths λ±Δλi, and a second modulated light beam including a pair of channels having wavelengths λ±Δλj where Δλi≠Δλj,. The wavelength controller is adapted for switching the light beam to one of said at least two optical modulators for modulation to one of said modulated light beams having a pair of channels with wavelengths λ±Δλi or λ±Δλj.

Dependencies are inferred from the claim text.