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Proceedings Paper

Using optical fiber sidewall to capture light from an adjustable depth
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Paper Abstract

It is commonly accepted that light captured by the fiber core sidewall is from a depth of less than 1 μm limited by the evanescent-wave (EW) field. Yet we demonstrate in this paper that, with some simple modifications, the fiber core sidewall is also able to capture light from an adjustable depth beyond the EW field. The key elements are an air-clad fiber core cylinder; a liquid sample droplet surrounding a short segment of the core; a narrow, collimated and position-tunable excitation beam perpendicular to the fiber axis to excite the sample. A theoretical investigation of the operation of the mechanism is given, which is verified by a preliminary experiment.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842169 (7 November 2012); doi: 10.1117/12.974862
Show Author Affiliations
Jianjun Ma, Univ. du Québec en Outaouais (Canada)
Yasser Chiniforooshan, Univ. du Québec en Outaouais (Canada)
Wojtek J. Bock, Univ. du Québec en Outaouais (Canada)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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