发明申请
- 专利标题: Fabrication of waveguides and bragg gratings with uv-irradiation
- 专利标题(中): 用紫外辐射制造波导和布拉格光栅
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申请号: US10535010申请日: 2003-05-19
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公开(公告)号: US20060127024A1公开(公告)日: 2006-06-15
- 发明人: Peter Smith , Richard Williams , Vassilios Albanis , Corin Gawith , Samuel Watts , Gregory Emmerson
- 申请人: Peter Smith , Richard Williams , Vassilios Albanis , Corin Gawith , Samuel Watts , Gregory Emmerson
- 优先权: GB0227803.4 20021128
- 国际申请: PCT/GB03/02141 WO 20030519
- 主分类号: G02B6/34
- IPC分类号: G02B6/34
摘要:
A method of simultaneously defining a waveguide and grating in a sample of photosensitive material comprises providing a sample of material (24) having a region which is photosensitive to light of a specific wavelength, generating a spot of light (22) at the specific wavelength, the spot having a periodic intensity pattern of high and low intensity fringes, and a width which is related to the width of the channel, positioning the spot within the photosensitive region and causing relative movement between the sample and the light spot along the desired path of the waveguide/grating define a channel of altered refractive index by exposing parts of the photosensitive region to the light spot. Modulation of the light spot to produce multiple exposures produces a grating, while continuous exposure results in a uniform waveguide. These structures can be written in straight lines or around curves, and can be accurately overwritten, so that complex optical devices can be produced in a single fabrication step.