Abstract

We demonstrate, for what we believe to be the first time, the use of a 3×3 fiber-optic coupler to realize a homodyne optical coherence tomography (OCT) system for en face imaging of highly scattering tissues and turbid media. The homodyne OCT setup exploits the inherent phase shifts between different output ports of a 3×3 fiber-optic coupler to extract amplitude information of a sample. Our homodyne en face OCT system features a measured resolution of 14μm axially and 9.4μm laterally with a 90dB signal-to-noise ratio at 10μs integration time. En face OCT imaging of a stage 52 Xenopus laevis was successfully demonstrated at a depth of 600μm within the sample.

© 2006 Optical Society of America

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