Other

Nippon Telegraph and Telephone Corporation

Kouichi Takiguchi

Kenya Suzuki

Shin Kamei

Osamu Moriwaki

Hiroshi Hasegawa

Ken-ichi Sato

Yoshihisa Sakai

Shoji Kakehashi

A simple optical waveband multiplexer/demultiplexer operable to separate a wavelength-division multiplexed light beam WDM consisting of a plurality of wavebands WB each including a plurality of optical channels, into a predetermined plurality of wavebands WB, and output the separated plurality of wavebands WB from a plurality of output ports, wherein the wavelength-division multiplexed light beam WDM is transmitted through two array waveguides each capable of performing a demultiplexing function with a resolution corresponding to wavelengths of the optical channels, and a characteristic of sequentially shifting the output ports by one position with shifting of input ports by one position, whereby the wavelength-division multiplexed light beam WDM is separated into a plurality of wavebands WB each including the mutually different optical channels selected from the optical channels included in the wavelength-division multiplexed light beam WDM, and the separated wavebands WB are outputted from the plurality of output ports, respectively.

Optical waveband demultiplexer, optical waveband multiplexer, and optical waveband selective switch

Growing community of inventors

Musashino, Japan

Kouichi Takiguchi