Abstract

A novel device for low-power fault-tolerant laser-to-fiber coupling is described; it makes use of self-pumped phase conjugation in photorefractive BaTiO₃. We found the degree of fault tolerance to improve by 2 orders of magnitude to 0.02 dB per 100-μm displacement within the determined displacement range at intensities incident on the crystal as low as 2 mW, compared with the losses without the BaTiO₃ present.

© 1997 Optical Society of America

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