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Title: Miniature refractometer based on Mach–Zehnder interferometer with waist-enlarged fusion bitaper
Authors: Ni, Kai
Dong, Xinyong
Chan, Chi Chiu
Li, Tao
Hu, Limin
Qian, Wenwen
Issue Date: 2012
Source: Ni, K., Dong, X., Chan, C. C., Li, T., Hu, L., & Qian, W. (2013). Miniature refractometer based on Mach–Zehnder interferometer with waist-enlarged fusion bitaper. Optics Communications, 292, 84-86.
Series/Report no.: Optics communications
Abstract: A miniature refractometer by using a Mach–Zehnder interferometer (MZI) in a standard single mode fiber (SMF) with two waist-enlarged fusion bitapers is proposed and experimentally demonstrated. Such an all-fiber SMF-MZI incorporates an intermodal interference between the core mode and cladding modes. Because the cladding modes are sensitive to the external environment, the SMF-MZI is exploited for refractive index measurement. Experimentally, high sensitivity of 266.5 nm/RIU and resolution of 3.75×10^−5 RIU are achieved within a range from 1.346 to 1.4412. The temperature effect of the proposed refractometer is also analyzed.
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2012.11.012
Rights: © 2012 Elsevier B.V.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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