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

• Main Authors: Gawith, C.B.E (Author), Hua, Ping (Author), Smith, P.G.R (Author), Cook, G. (Author)
• Format: Article
• Language: English
• Published: 2001-06-18.
• Subjects: Article
• Online Access: Get fulltext

We report the fabrication of a 20µm-thick photorefractive Fe:LiNbO₃ planar waveguide buried in MgO:LiNbO₃ by direct bonding of precision polished surfaces. Nonreciprocal transmission measurements were performed in a 3mm-long device with a continuous wave 532nm 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 4.9ms.