Temperature-insensitive refractive index sensor based on Mach-Zehnder interferometer with two microcavities

Yinfeng Wang; Sumei Wang; Lan Jiang; Hua Huang; Liuchao Zhang; Peng Wang; Lingya Lv; Zhitao Cao

doi:10.3788/COL201715.020603

Temperature-insensitive refractive index sensor based on Mach-Zehnder interferometer with two microcavities

Yinfeng Wang, Sumei Wang^*, Lan Jiang, Hua Huang, Liuchao Zhang, Peng Wang, Lingya Lv, Zhitao Cao

^*Corresponding author for this work

School of Mechanical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

We propose a temperature-insensitive refractive index (RI) fiber sensor based on a Mach-Zehnder interferometer. The sensor with high sensitivity and a robust structure is fabricated by splicing a short photonic crystal fiber (PCF) between two single-mode fibers, where two microcavities are formed at both junctions because of the collapse of the PCF air holes. The microcavity with a larger equatorial dimension can excite higher-order cladding modes, so the sensor presents a high RI sensitivity, which can reach 244.16 nm/RIU in the RI range of 1.333-1.3778. Meanwhile it has a low temperature sensitivity of 0.005 nm/°C in the range of 33°C-360°C.

Original language	English
Article number	020603
Journal	Chinese Optics Letters
Volume	15
Issue number	2
DOIs	https://doi.org/10.3788/COL201715.020603
Publication status	Published - 10 Feb 2017

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title = "Temperature-insensitive refractive index sensor based on Mach-Zehnder interferometer with two microcavities",

abstract = "We propose a temperature-insensitive refractive index (RI) fiber sensor based on a Mach-Zehnder interferometer. The sensor with high sensitivity and a robust structure is fabricated by splicing a short photonic crystal fiber (PCF) between two single-mode fibers, where two microcavities are formed at both junctions because of the collapse of the PCF air holes. The microcavity with a larger equatorial dimension can excite higher-order cladding modes, so the sensor presents a high RI sensitivity, which can reach 244.16 nm/RIU in the RI range of 1.333-1.3778. Meanwhile it has a low temperature sensitivity of 0.005 nm/°C in the range of 33°C-360°C.",

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AU - Wang, Yinfeng

AU - Wang, Sumei

AU - Jiang, Lan

AU - Huang, Hua

AU - Zhang, Liuchao

AU - Wang, Peng

AU - Lv, Lingya

AU - Cao, Zhitao

PY - 2017/2/10

Y1 - 2017/2/10

N2 - We propose a temperature-insensitive refractive index (RI) fiber sensor based on a Mach-Zehnder interferometer. The sensor with high sensitivity and a robust structure is fabricated by splicing a short photonic crystal fiber (PCF) between two single-mode fibers, where two microcavities are formed at both junctions because of the collapse of the PCF air holes. The microcavity with a larger equatorial dimension can excite higher-order cladding modes, so the sensor presents a high RI sensitivity, which can reach 244.16 nm/RIU in the RI range of 1.333-1.3778. Meanwhile it has a low temperature sensitivity of 0.005 nm/°C in the range of 33°C-360°C.

AB - We propose a temperature-insensitive refractive index (RI) fiber sensor based on a Mach-Zehnder interferometer. The sensor with high sensitivity and a robust structure is fabricated by splicing a short photonic crystal fiber (PCF) between two single-mode fibers, where two microcavities are formed at both junctions because of the collapse of the PCF air holes. The microcavity with a larger equatorial dimension can excite higher-order cladding modes, so the sensor presents a high RI sensitivity, which can reach 244.16 nm/RIU in the RI range of 1.333-1.3778. Meanwhile it has a low temperature sensitivity of 0.005 nm/°C in the range of 33°C-360°C.

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Temperature-insensitive refractive index sensor based on Mach-Zehnder interferometer with two microcavities

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