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Sensors 2018, 18(2), 567; https://doi.org/10.3390/s18020567

Thermally Optimized Polarization-Maintaining Photonic Crystal Fiber and Its FOG Application

School of Instrument Science and Opto-electronics Engineering, Beihang University, Beijing 100191, China
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Received: 18 December 2017 / Revised: 11 February 2018 / Accepted: 12 February 2018 / Published: 13 February 2018
(This article belongs to the Section State-of-the-Art Sensors Technologies)
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Abstract

In this paper, we propose a small-diameter polarization-maintaining solid-core photonic crystal fiber. The coating diameter, cladding diameter and other key parameters relating to the thermal properties were studied. Based on the optimized parameters, a fiber with a Shupe constant 15% lower than commercial photonic crystal fibers (PCFs) was fabricated, and the transmission loss was lower than 2 dB/km. The superior thermal stability of our fiber design was proven through both simulation and measurement. Using the small-diameter fiber, a split high precision fiber optic gyro (FOG) prototype was fabricated. The bias stability of the FOG was 0.0023 °/h, the random walk was 0.0003 °/ h , and the scale factor error was less than 1 ppm. Throughout a temperature variation ranging from −40 to 60 °C, the bias stability was less than 0.02 °/h without temperature compensation which is notably better than FOG with panda fiber. As a result, the PCF FOG is a promising choice for high precision FOG applications. View Full-Text
Keywords: solid-core photonic crystal fiber; thermal performance; gyroscope solid-core photonic crystal fiber; thermal performance; gyroscope
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Zhang, C.; Zhang, Z.; Xu, X.; Cai, W. Thermally Optimized Polarization-Maintaining Photonic Crystal Fiber and Its FOG Application. Sensors 2018, 18, 567.

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