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A miniature reflective micro-force sensor based on a microfiber coupler

Optics Express, ISSN: 1094-4087, Vol: 22, Issue: 3, Page: 2443-2450
2014
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Article Description

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 ∼3754 nm/N which is three orders of magnitude larger than traditional optical fiber force sensors, and a low detection limit of ∼1.6 μN. The good repeatability is also shown in this paper. © 2014 Optical Society of America.

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