Optical Review

, Volume 2, Issue 6, pp 438–443

Modification of Photorefractive Waveguides in Lithium Niobate by Guided Beam for Optical Dynamic Interconnection

  • Osamu Matoba
  • Kouichi Ikezawa
  • Kazuyoshi Itoh
  • Yoshiki Ichioka
INFORMATION OPTICS

DOI: 10.1007/s10043-995-0438-7

Cite this article as:
Matoba, O., Ikezawa, K., Itoh, K. et al. OPT REV (1995) 2: 438. doi:10.1007/s10043-995-0438-7

Abstract

We investigate experimentally and numerically a novel method of modifying photorefractive waveguides in a lithium niobate crystal by a guided beam. The guided beam with a strong optical power can change the refractive index of the photorefractive waveguide because of the photorefractive effect. The modification of waveguide structure can be utilized for optical dynamic interconnection. Changes of optical characteristics of a probe beam caused by a modification beam are investigated. Experimental results show that the transmitted power or the peak intensity of the probe beam decreases exponentially as a function of total exposure energy of the modification beam. We also numerically analyze the refractive index change caused by the modification beam in the photorefractive waveguide. The numerical results show good agreement with the experimental results.

Key words

optical interconnectionphotorefractivewaveguideoptical neural networkbeam propagation method

Copyright information

© The Optical Society of Japan 1995

Authors and Affiliations

  • Osamu Matoba
    • 1
  • Kouichi Ikezawa
    • 1
  • Kazuyoshi Itoh
    • 1
  • Yoshiki Ichioka
    • 1
  1. 1.Department of Applied Physics, Faculty of EngineeringOsaka UniversitySuitaJapan