Journal
OPTICS EXPRESS
Volume 22, Issue 3, Pages 2443-2450Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.22.002443
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Funding
- National 973 program [2012CB921803, 2011CBA00205]
- NSFC program [11074117]
- National Science Fund for Excellent Young Scientists Fund [61322503]
- National Science Fund for Distinguished Young Scholars [61225026]
- PAPD
- Fundamental Research Funds for the Central Universities
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A compact highly sensitive microfiber coupler based reflective micro-force sensor is presented. The device is fabricated by fusing two twisted optical fibers and then connecting two of the pigtails to form a Sagnac loop. The sensor has a high force sensitivity of similar to 3754 nm/N which is three orders of magnitude larger than traditional optical fiber force sensors, and a low detection limit of similar to 1.6 mu N. The good repeatability is also shown in this paper. (C) 2014 Optical Society of America
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