Nonreciprocal transmission in a direct-bonded photorefractive Fe:LiNbO[sub 3] buried waveguide

Gawith, Corin B. E.; Hua, Ping; Smith, Peter G. R.; Cook, Gary
June 2001
Applied Physics Letters;6/25/2001, Vol. 78 Issue 26, p4106
Academic Journal
We report the fabrication of a 20-μm-thick photorefractive Fe:LiNbO[sub 3] planar waveguide buried in MgO:LiNbO[sub 3] by direct bonding of precision polished surfaces. Nonreciprocal transmission measurements were performed in a 3-mm-long device with a continuous wave 532 nm frequency-doubled YAG laser source. A Fresnel-reflection-based counterpropagating beam arrangement was used to measure a relative change in optical density of approximately 2 within the waveguide, with a photorefractive response time of 4.9 ms. © 2001 American Institute of Physics.


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