Optical and Quantum Electronics

, Volume 46, Issue 12, pp 1529–1538

Photorefractive long-period waveguide grating filter in lithium niobate strip waveguide

  • Ming Zhang
  • Wen Chen
  • Liuwei Chen
  • Bisheng Quan
  • Yuling Liu
Article

DOI: 10.1007/s11082-013-9867-x

Cite this article as:
Zhang, M., Chen, W., Chen, L. et al. Opt Quant Electron (2014) 46: 1529. doi:10.1007/s11082-013-9867-x

Abstract

To fabricate a long-period waveguide grating (LPWG) filter in a simple, reliable and low-cost way, a novel LPWG scheme based on photorefractive grating is designed and theoretically analyzed in a Ti-diffused strip waveguide embedded in a Ti-diffused planar \(\hbox {LiNbO}_{3}\) waveguide. By means of effective index method and coupled-mode theory, the processing conditions of the planar and the strip waveguide have been calculated. The minimum 100 % filtering length \(L=1.40\) cm and the coupling coefficient \(\kappa =112.23\,\hbox {m}^{-1}\) are obtained. The photorefractive LPWG filter can be used in coarse wavelength division multiplexing system.

Keywords

Filter Ti-diffusion waveguide Photorefractive grating Lithium niobate 

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Ming Zhang
    • 1
  • Wen Chen
    • 1
  • Liuwei Chen
    • 1
  • Bisheng Quan
    • 1
  • Yuling Liu
    • 1
  1. 1.College of SciencesZhejiang University of TechnologyHangzhou China

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