公开(公告)号：US5581639A

公开(公告)日：1996-12-03

申请号：US434841

申请日：1995-05-04

申请人： Michael Davies ,  Jean-Paul Noel ,  Derek Houghton

发明人： Michael Davies ,  Jean-Paul Noel ,  Derek Houghton

IPC分类号： G02B6/12 ,  G02B6/124 ,  G02B6/10

CPC分类号： G02B6/12007 ,  G02B6/124 ,  G02B2006/12107

摘要： An optical wavelength selective device is provided that is particularly useful as a demultiplexer. The device is made from a planar slab optical waveguide material transmissive to light. Perturbations in the form of holes are etched into the slab waveguide cladding or preferably into the core of the waveguide thereby changing the effective refractive index of regions within the core. The holes are very closely spaced and form a transmissive optical grating, having dimensions suitable for operating in the Raman-Nath regime. Mirrors or lenses are formed within the device for guiding an input beam into the waveguide as a parallel light source.

摘要翻译： 提供了一种特别适用于解复用器的光波长选择装置。 该装置由透光的平板光波导材料制成。 孔形式的扰动被蚀刻到平板波导包层中，或优选地蚀刻到波导的芯中，从而改变芯内的区域的有效折射率。 这些孔非常紧密地间隔开并形成透射光栅，其尺寸适于在拉曼 - 纳思（Raman-Nath）状态下操作。 反射镜或透镜形成在用于将输入光束引导到波导中作为平行光源的装置内。