发明授权
- 专利标题： Method and apparatus for forming a diffraction grating
- 专利标题（中）： 用于形成衍射光栅的方法和装置
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申请号： US09281908申请日： 1999-03-31
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公开(公告)号： US06347171B1公开(公告)日： 2002-02-12
- 发明人: Abdelkrim Tatah , Xinbing Liu
- 申请人： Abdelkrim Tatah , Xinbing Liu
- 主分类号： G02B634
- IPC分类号： G02B634
摘要：
A method for forming a diffraction grating in an optical fiber. First and second ultrashort laser pulses are generated. The first and second ultrashort laser pulses are directed to intersect and form an interference pattern. The interference pattern includes periodic intensity variations which cause corresponding periodic changes in an index of refraction of the optical fiber. The ultrashort laser pulses and the optical fiber are configured to be self-focused by the cladding and core of the optical fiber.
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