Patent ID: 8023781

Claim:
A broadband optical splitter/router comprising: an optical signal input port; a first broadband wavelength multiplexing and demultiplexing filter; an array waveguide grating; an optical splitter; and a second broadband wavelength multiplexing and demultiplexing filter, wherein, optical signals having a plurality of wavelengths input from the optical signal input port are demultiplexed into optical signals in a predetermined wavelength band by the first broadband wavelength multiplexing and demultiplexing filter, optical signals in a first wavelength band among the demultiplexed optical signals are split into optical signals having substantially the same intensity by the optical splitter, optical signals in a second wavelength band among the demultiplexed optical signals are demultiplexed into optical signals having a predetermined wavelength spacing by the array waveguide grating, and the split optical signals in the first wavelength band and the demultiplexed optical signals in the second wavelength band are multiplexed by the second broadband wavelength multiplexing and demultiplexing filter.