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Mode-filtered large-core fiber for optical coherence tomography |
Applied Optics, Vol. 51, Issue 34, pp. 8262-8270 (2012)
http://dx.doi.org/10.1364/AO.51.008262
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Abstract
We have investigated the use of multimode fiber in optical coherence tomography (OCT) with a mode filter that selectively suppresses the power of the high-order modes (HOMs). A large-core fiber (LCF) that has a moderate number of guiding modes was found to be an attractive alternative to the conventional single-mode fiber for its large mode area and the consequentially wide Rayleigh range of the output beam if the HOMs of the LCF were efficiently filtered out by a mode filter installed in the middle. For this, a simple mode filtering scheme of a fiber-coil mode filter was developed in this study. The LCF was uniformly coiled by an optimal bend radius with a fiber winder, specially devised for making a low-loss mode filter. The feasibility of the mode-filtered LCF in OCT imaging was tested with a common-path OCT system. It has been successfully demonstrated that our mode-filtered LCF can provide a useful imaging or sensing probe without an objective lens that greatly simplifies the structure of the probing optics.
© 2012 Optical Society of America
OCIS Codes
(060.2350) Fiber optics and optical communications : Fiber optics imaging
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(110.4500) Imaging systems : Optical coherence tomography
ToC Category:
Imaging Systems
History
Original Manuscript: August 6, 2012
Revised Manuscript: October 10, 2012
Manuscript Accepted: October 12, 2012
Published: November 30, 2012
Virtual Issues
Vol. 8, Iss. 1 Virtual Journal for Biomedical Optics
Citation
Sucbei Moon and Zhongping Chen, "Mode-filtered large-core fiber for optical coherence tomography," Appl. Opt. 51, 8262-8270 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-34-8262
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