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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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.


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