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Title: Highly sensitive refractive index sensor based on adiabatically tapered microfiber long period gratings
Authors: Ji, Wen Bin
Tjin, Swee Chuan
Lin, Bo
Ng, Choong Leng
Keywords: DRNTU::Engineering
Issue Date: 2013
Source: Ji, W. B., Tjin, S. C., Lin, B., & Ng, C. L. (2013). Highly Sensitive Refractive Index Sensor Based on Adiabatically Tapered Microfiber Long Period Gratings. Sensors, 13(10), 14055-14063.
Series/Report no.: Sensors
Abstract: We demonstrate a refractive index sensor based on long period grating (LPG) inscribed in a special photosensitive microfiber with double-clad profile. The fiber is tapered gradual enough to ensure the adiabaticity of the fiber taper. In other words, the resulting insertion loss is sufficient small. The Boron and Germanium co-doped inner cladding makes it suitable for inscribing gratings into its tapered form. The manner of wavelength shift for refractive indices (RI) differs from conventional LPG. The detection limit for refractive index is 1.67 × 10−5.
ISSN: 1424-8220
DOI: 10.3390/s131014055
Rights: © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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