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Sensors 2014, 14(3), 5677-5686; doi:10.3390/s140305677

An Integrated Photoluminescence Sensing Platform Using a Single-Multi-Mode Fiber Coupler-Based Probe

School of Environment and Natural Resources, Renmin University of China, No.59, Zhongguancun, Haidian, Beijing 100872, China
Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave, Cambridge, MA 02139, USA
School of Environment, Tsinghua University, No.1, Tsinghua Yuan, Haidian, Beijing 100084, China
Authors to whom correspondence should be addressed.
Received: 6 November 2013 / Revised: 27 February 2014 / Accepted: 6 March 2014 / Published: 21 March 2014
(This article belongs to the Special Issue Photonic Sensors for Industrial, Environmental and Health Monitoring)
View Full-Text   |   Download PDF [499 KB, uploaded 21 June 2014]   |  


We demonstrate an integrated fiber optic photoluminescence sensing platform using a novel single-multi-mode fiber coupler (SMFC)-based probe with high collection efficiency for fluorescence signals. The SMFC, prepared using fused biconical taper technology, not only transmits excitation light, but also collects and transmits fluorescence. The entire system does not use complex optical components and rarely requires optical alignment. The simple structure of the SMFC considerably improves the light transmission efficiency, signal-to-noise ratio, and sensitivity of the system. Theoretical and experimental results show that the proposed probe increases the collection efficiency by more than eight-fold compared with a bifurcated fiber probe. The performance of the proposed probe was experimentally evaluated by measuring the fluorescence spectra of well-known targets and a fresh Tall Fescue leaf. View Full-Text
Keywords: photoluminescence; optical fiber coupler; fiber probe; fluorescence measurement photoluminescence; optical fiber coupler; fiber probe; fluorescence measurement

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Long, F.; Zhu, A.; Shi, H. An Integrated Photoluminescence Sensing Platform Using a Single-Multi-Mode Fiber Coupler-Based Probe. Sensors 2014, 14, 5677-5686.

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