Fiber probes used in optical coherence tomography

Scitation Aug 12 2008 Gastroenterology , Probes

Quality and parameters of probing optical beams are extremely important in optical coherence tomography (OCT) systems both for image quality and light coupling efficiency considerations. For example, the shape, size, focal position, and focal range of such beams could have a great impact on the lateral resolution, penetration depth, and signal-to-noise ratio of the image. We present a design, construction and characterization of different variations of GRIN and ball fiber lenses, for ultra-small OCT probes. Those fiber probes are made of a single mode fiber and a GRIN or ball fiber lens with or without a fiber spacer between them ...

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