Evaluation of techniques to model bend loss in multimode fibers for endoscopic application

Document Type

Article

Publication Title

Applied Optics

Publication Date

4-20-2010

Abstract

Bend loss from optical fibers can have positive applications, which need to be characterized and related to fiber curvature in a systematic approach to be useful. One potential application for optical fibers is a shape sensor for tracking flexible bodies in remote access environments, such as in endoscopy or boroscopy. We conducted a review of bend-loss characterization and evaluated several methods for characterizing bend loss in multimode optical fibers for an endoscopic shape-tracking application. Specifically, closed-form equation-based methods and numerical simulations were examined. Beam propagation method (BPM) simulations were determined to be the most applicable characterization tool. Results from simulations using BPM software were compared to experimentally obtained data. BPM simulation was sufficiently accurate for modeling 50 μm fibers but impractical for larger, multimode fibers. © 2010 Optical Society of America.

Volume

49

Issue

12

First Page

2220

Last Page

2231

DOI

10.1364/AO.49.002220

ISSN

1559128X

E-ISSN

15394522

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