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Nonreciprocal transmission in a direct-bonded photorefractive Fe:LiNbO3 buried waveguide

2001; American Institute of Physics; Volume: 78; Issue: 26 Linguagem: Inglês

10.1063/1.1381028

1520-8842

Corin B. E. Gawith, Ping Hua, Peter G. R. Smith, Gary Cook,

Photonic Crystals and Applications

We report the fabrication of a 20-μm-thick photorefractive Fe:LiNbO3 planar waveguide buried in MgO:LiNbO3 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.