Light-induced waveguide arrays in photorefractive crystals

Peng Zhang, Jianlin Zhao, Dexing Yang, Yanghua Ma, Yidong Sun

科研成果: 期刊稿件会议文章同行评审

2 引用 (Scopus)

摘要

Light-induced waveguide arrays pave a way to implement massive parallel and adaptive interconnection, and provide a fertile ground for investigating self-localized states, better known as discrete solitons. In this paper, creating planar and channel waveguide arrays by illuminations of two- or four-beam interference fields are investigated both theoretically and experimentally in LiNbO3:Fe, SBN:Cr, and KNSBN:Ce crystals. The distributions of refractive index changes induced by multi-beam interference fields with different orientations in various photorefractive crystals are numerically simulated. Employing illuminations of two-beam interference fields, planar waveguide arrays are experimentally demonstrated in an open circuit LiNbO3:Fe crystal and biased SBN:Cr and KNSBN:Ce crystals. An approach for fabricating channel waveguide arrays by employing illuminations of two-beam interference fields is presented. By fabricating a square and a rectangular channel waveguide arrays in a LiNbO3:Fe crystal this approach is experimentally demonstrated. Creating channel waveguide arrays using four-beam interference fields with different orientations are also performed in the three kinds of crystals. The index profiles of the light-induced waveguide arrays are measured employing the intcrferometric method or the digital holography. The near field patterns, diffraction patterns and the guiding test results show that the waveguide arrays are successfully fabricated.

源语言英语
文章编号60320E
期刊Proceedings of SPIE - The International Society for Optical Engineering
6032
DOI
出版状态已出版 - 2006
活动ICO20: MEMS, MOEMS, and NEMS - Changchun, 中国
期限: 21 8月 200526 8月 2005

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