Article

Applied Physics B

, Volume 95, Issue 3, pp 421-428

Photorefractive effect in LiNbO3-based integrated-optical circuits at wavelengths of third telecom window

  • S. M. KostritskiiAffiliated withMPTE Department, Moscow Institute of Electronic Technology Email author 

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Abstract

Original results on investigation of the photorefractive effect in straight channels and integrated-optical circuits such as a directional coupler, Y-splitter and Mach–Zehnder interferometer, exploiting titanium-indiffused and proton-exchanged LiNbO3 waveguides, are presented. It has been found that the photorefractive damage is non-negligible for IR radiation with wavelengths near 1.5 μm in all circuits studied. The new methods for accurate evaluation of small extents of photorefractive effect are proposed.

PACS

42.82.Bq 42.65.Hw 42.82.-m