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Extending the effective imaging range of Fourier-domain optical coherence tomography using a fiber optic switch
Hui Wang1, Yinsheng Pan, Andrew M Rollins
1Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA. hxw26@case.edu
Abstract:
The effective imaging range of Fourier-domain optical coherence tomography is limited by falloff. We present a very simple method to extend the effective imaging range with dual reference arms and a high-speed fiber optic switch. The effective imaging range was increased by 1.8 with two reference arms compared with a single reference arm. Ex vivo tissue images show significantly improved sensitivity over a large imaging range. Further extension of the imaging range is feasible with multiple reference arms. The tradeoff between image acquisition rate and imaging range is discussed.
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