发明授权
- 专利标题: Optical multi-demultiplexer
- 专利标题(中): 光多路分解器
-
申请号: US10132413申请日: 2002-04-25
-
公开(公告)号: US06898349B2公开(公告)日: 2005-05-24
- 发明人: Junji Yamauchi , Michiya Masuda , Shigeru Kawaguchi , Hisamatsu Nakano , Yuichi Yamamoto , Ryouichi Tazawa
- 申请人: Junji Yamauchi , Michiya Masuda , Shigeru Kawaguchi , Hisamatsu Nakano , Yuichi Yamamoto , Ryouichi Tazawa
- 申请人地址: JP Yokohama
- 专利权人: NHK Spring Co., Ltd.
- 当前专利权人: NHK Spring Co., Ltd.
- 当前专利权人地址: JP Yokohama
- 代理机构: Scully, Scott, Murphy & Presser
- 优先权: JP2001-128130 20010425; JP2002-007698 20020116
- 主分类号: G02B6/12
- IPC分类号: G02B6/12 ; G02B5/18 ; G02B6/28 ; G02B6/34
摘要:
An optical multi-demultiplexer of the present invention comprises an input waveguide to which wavelength division multiple signals are applied, a plurality of output waveguides for demultiplexing and outputting the wavelength division multiple signals, an arrayed waveguide including a plurality of channel waveguides having different waveguide lengths, an input slab waveguide, and an output slab waveguide. The input slab waveguide is provided between the input waveguide and the arrayed waveguide. The output slab waveguide is provided between the arrayed waveguide and the output waveguides. The input slab waveguide is formed with tapered island regions having a refractive index lower than that of the core layer of the slab waveguide. The island regions are situated in positions opposite the channel waveguides of the arrayed waveguide.
公开/授权文献
- US20020159696A1 Optical multi-demultiplexer 公开/授权日:2002-10-31