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1. (WO2011162269) MULTIPLEXER/DEMULTIPLEXER AND MULTIPLEXING/DEMULTIPLEXING METHOD

Pub. No.:    WO/2011/162269    International Application No.:    PCT/JP2011/064190
Publication Date: Dec 29, 2011 International Filing Date: Jun 15, 2011
IPC: G02B 6/293
G02B 6/12
H04B 10/02
Applicants: NEC CORPORATION
日本電気株式会社
MIZUTANI, Kenji
水谷 健二
TAJIMA, Akio
田島 章雄
SAKAUCHI, Masahiro
坂内 正宏
HINO, Tomoyuki
樋野 智之
HAYASHITANI, Masahiro
林谷 昌洋
TAKAGI, Hiroyuki
都木 宏之
Inventors: MIZUTANI, Kenji
水谷 健二
TAJIMA, Akio
田島 章雄
SAKAUCHI, Masahiro
坂内 正宏
HINO, Tomoyuki
樋野 智之
HAYASHITANI, Masahiro
林谷 昌洋
TAKAGI, Hiroyuki
都木 宏之
Title: MULTIPLEXER/DEMULTIPLEXER AND MULTIPLEXING/DEMULTIPLEXING METHOD
Abstract:
This invention is directed to achievement of a multiplexer/demultiplexer that exhibits a high frequency use efficiency, an even wavelength characteristic in transmittance region, low cost, compact size, variable wavelength and variable bands. The multiplexer/demultiplexer comprises: a first light branching means that branches an input light into a plurality of lights for output; a plurality of light wavelength separating means each of which separates the respective one of the lights outputted by the first light branching means for each of a plurality of predetermined frequency bands for output; and a light coupling means for merging those ones of the outputs from the light wavelength separating means, the frequency bands of which are different from one another, for output.