公开(公告)号：US20020159696A1

公开(公告)日：2002-10-31

申请号：US10132413

申请日：2002-04-25

Applicant: NHK SPRING CO., LTD.

Inventor： Junji Yamauchi ,  Michiya Masuda ,  Shigeru Kawaguchi ,  Hisamatsu Nakano ,  Yuichi Yamamoto ,  Ryouichi Tazawa

IPC: G02B006/34 ,  G02B006/293 ,  H04J014/02

CPC classification number: G02B6/12014 ,  G02B6/2813 ,  G02B2006/121

Abstract: 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.

Abstract translation: 本发明的光多路解复用器包括：施加波分多信号的输入波导，用于解复用和输出波分多信号的多个输出波导;阵列波导，包括具有不同波导长度的多个波导波导 输入平板波导和输出平板波导。 输入平板波导设置在输入波导和阵列波导之间。 输出平板波导设置在阵列波导和输出波导之间。 输入平板波导形成为具有比平板波导的芯层的折射率低的折射率的锥形岛状区域。 岛区位于与阵列波导的通道波导相对的位置。

公开(公告)号：US20040170355A1

公开(公告)日：2004-09-02

申请号：US10676210

申请日：2003-10-01

Applicant: NHK SPRING CO., LTD.

Inventor： Junji Yamauchi ,  Michiya Masuda ,  Ryouichi Tazawa ,  Hisamatsu Nakano ,  Yuichi Yamamoto

IPC: G02B006/34

CPC classification number: G02B6/12014

Abstract: An arrayed-waveguide grating type optical multi-demultiplexer includes input waveguides, a first slab waveguide, a channel waveguide array, a second slab waveguide, and output waveguides. A pair of different refractive index regions, each having a refractive index different from that of the second slab waveguide, are formed on the second slab waveguide near a boundary between the second slab waveguide and channel waveguide array. The different refractive index regions project in peninsular shapes from both side portions of the slab waveguide. Light traveling from each waveguide of the channel waveguide array toward the output waveguides passes through the different refractive index regions. An optical distribution with a flattened field-distribution peak is created at a boundary between the second slab waveguide and output waveguides.

Abstract translation: 阵列波导光栅型光多路解复用器包括输入波导，第一平板波导，通道波导阵列，第二平板波导和输出波导。 在第二平板波导和第二平板波导阵列之间的边界附近的第二平板波导上形成一对折射率不同于第二平板波导的折射率的折射率区域。 不同的折射率区域从平板波导的两侧投影成半岛形状。 从信道波导阵列的每个波导向输出波导传播的光穿过不同的折射率区域。 在第二平板波导和输出波导之间的边界处产生具有平坦场分布峰的光分布。