Patent ID: 6608715
Filing Date: 2003-08-19
Classification: A61K,C07C,C07D,G02B,H04Q

Abstract:
A wavelength converter comprising:a broadband light source producing light having a plurality of wavelengths; a semiconductor optical amplifier that receives said light having a plurality of wavelengths, said semiconductor optical amplifier amplifying said light under the control of a control signal and producing an amplified optical signal; and a demultiplexer that receives the output of said semiconductor optical amplifier and extracts from said amplified optical signal at least one of said plurality of wavelengths as an output optical signal at a second wavelength, wherein said demultiplexer comprises: (1) an input waveguide for carrying the output of said semiconductor optical amplifier; (2) a plurality of intersecting waveguides intersecting with said input waveguide to form a plurality of intersections; and (3) a plurality of switches disposed on said plurality of intersections.