Search for: [Abstrakt = "A temperature\-insensitive displacement sensor based on high\-birefringence photonic crystal fiber loop mirror \(Hi\-Bi PCFLM\) is proposed. Through the measurement of transmission peak wavelength of the Hi\-Bi PCFLM, this displacement sensor quantifies the free end displacement of a uniform\-strength cantilever beam, on which part of Hi\-Bi PCF is pasted. We have theoretically analyzed its operation principle, which is validated by our experimental results. This displacement sensor has the sensitivity of 0.28286 nm\/mm and 0.27024 nm\/mm over a range from –21 mm to 21 mm for two adjacent peak wavelengths, respectively. Experimental observation indicates that this sensor has good stability through a temperature range from 40 °C to 109.5 °C."]

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