发明申请
- 专利标题： External grating structures for interfacing wavelength-division-multiplexed optical sources with thin optical waveguides
- 专利标题（中）： 用于将波分复用光源与薄光波导接口连接的外部光栅结构
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申请号： US10935145申请日： 2004-09-07
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公开(公告)号： US20050094938A1公开(公告)日： 2005-05-05
- 发明人: Margaret Ghiron , Prakash Gothoskar , Robert Montgomery , Vipulkumar Patel , Soham Pathak , Kalpendu Shastri , Katherine Yanushefski
- 申请人： Margaret Ghiron , Prakash Gothoskar , Robert Montgomery , Vipulkumar Patel , Soham Pathak , Kalpendu Shastri , Katherine Yanushefski
- 主分类号： G02B
- IPC分类号： G02B20060101 ; G02B6/34
摘要：
A coupling arrangement for allowing multiple wavelengths to be coupled into and out of a relatively thin silicon optical waveguide layer utilizes a diffractive optical element, in the form of a volume phase grating, in combination with a prism coupling structure. The diffractive optical element is formed to comprise a predetermined modulation index sufficient to diffract the various wavelengths through angles associated with improving the coupling efficiency of each wavelength into the silicon waveguide. The diffractive optical element may be formed as a separate element, or formed as an integral part of the coupling facet of the prism coupler.
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