中国物理B ›› 2006, Vol. 15 ›› Issue (2): 403-406.doi: 10.1088/1009-1963/15/2/028

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Waveguides induced by grey screening solitons

张彦鹏1, 卢克清2, 赵卫2, 杨延龙2, 张美志2, 李金萍2, 刘红军2   

  1. (1)Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China; (2)State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics,Chinese Academic of Sciences, Xi'an 710068, China
  • 收稿日期:2005-08-24 修回日期:2005-10-23 出版日期:2006-02-20 发布日期:2006-02-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10474136), and the Director Foundation of Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences.

Waveguides induced by grey screening solitons

Lu Ke-Qing (卢克清)a, Zhao Wei (赵卫)a, Yang Yan-Long (杨延龙)a, Zhang Mei-Zhi (张美志)a, Li Jin-Ping (李金萍)a, Liu Hong-Jun (刘红军)a, Zhang Yan-Peng (张彦鹏)b   

  1. a State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences, Xi'an 710068, China; b Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, China
  • Received:2005-08-24 Revised:2005-10-23 Online:2006-02-20 Published:2006-02-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10474136), and the Director Foundation of Xi'an Institute of Optics and Precision Mechanics, Chinese Academic of Sciences.

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摘要： We investigate the properties of waveguides induced by one-dimensional grey screening solitons in biased photorefractive crystals. The results show that waveguides induced by grey screening solitons are always of single mode for all intensity ratios, i.e. the ratios between the peak intensity of the soliton and the dark irradiance. Our analysis indicates that the energy confined near the centre of the grey soliton and the propagation constant of the guided mode of the waveguide induced by the grey screening soliton increase monotonically with intensity ratio increasing. On the other hand, when the soliton greyness increases, the energy confined near the centre of the grey soliton and the propagation constant of the guided mode of the waveguide induced by the grey screening soliton decrease monotonically. Relevant examples are provided where photorefractive crystal is of the strontium barium niobate type.

关键词: soliton waveguide, photorefractive effect, nonlinear optics

Abstract: We investigate the properties of waveguides induced by one-dimensional grey screening solitons in biased photorefractive crystals. The results show that waveguides induced by grey screening solitons are always of single mode for all intensity ratios, i.e. the ratios between the peak intensity of the soliton and the dark irradiance. Our analysis indicates that the energy confined near the centre of the grey soliton and the propagation constant of the guided mode of the waveguide induced by the grey screening soliton increase monotonically with intensity ratio increasing. On the other hand, when the soliton greyness increases, the energy confined near the centre of the grey soliton and the propagation constant of the guided mode of the waveguide induced by the grey screening soliton decrease monotonically. Relevant examples are provided where photorefractive crystal is of the strontium barium niobate type.

Key words: soliton waveguide, photorefractive effect, nonlinear optics

中图分类号:  (Optical solitons; nonlinear guided waves)

  • 42.65.Tg
42.79.Gn (Optical waveguides and couplers) 42.65.Hw (Phase conjugation; photorefractive and Kerr effects)