The influence of multimode fiber in the detection arm on a low-coherence interferometric signal

Roman V. Kuranov; Gregory Gelikonov; Dmitry V. Shabanov

doi:10.1117/12.592006

13 April 2005 The influence of multimode fiber in the detection arm on a low-coherence interferometric signal

Roman V. Kuranov, Gregory Gelikonov, Dmitry V. Shabanov

Proceedings Volume 5690, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine IX; (2005) https://doi.org/10.1117/12.592006
Event: SPIE BiOS, 2005, San Jose, CA, United States

Abstract

We investigated the influence of fiber that can support more than one propagation mode in the detection arm on the dynamic range of optical low-coherence reflectometry setup (OLCR). We theoretically and experimentally showed that the dynamic range in this case can be limited up to 20dB by parasitic spikes in the OLCR signal due to coupling of modes with different group delays. In our experiments we used MM fiber 160 cm section (core/cladding diameter 50/125 μm) and PM fiber HB980 (Δn=2*10^-4, Fibercore Ltd., UK). We also experimentally showed that the single-mode fiber in the detection arm is not altered autocorrelation field function of the source.

Citation Download Citation

Roman V. Kuranov, Gregory Gelikonov, and Dmitry V. Shabanov "The influence of multimode fiber in the detection arm on a low-coherence interferometric signal", Proc. SPIE 5690, Coherence Domain Optical Methods and Optical Coherence Tomography in Biomedicine IX, (13 April 2005); https://doi.org/10.1117/12.592006

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