Photonic Crystal Fiber Strain Sensor Based on Modified Mach–Zehnder Interferometer
oleh: L. M. Hu, C. C. Chan, X. Y. Dong, Y. P. Wang, P. Zu, W. C. Wong, W. W. Qian, T. Li
| Format: | Article |
|---|---|
| Diterbitkan: | IEEE 2012-01-01 |
Deskripsi
In this paper, a novel strain sensor is proposed and demonstrated by employing a modified photonic crystal fiber (PCF)-based Mach–Zehnder interferometer, in which a collapsed region is introduced at the middle point of the PCF to improve the extinction ratio. Experimental results show that this proposed structure has a high sensitivity of 11.22 <formula formulatype="inline"><tex Notation="TeX">$\hbox{dB/m}\varepsilon$</tex></formula> over a range of 1.28 <formula formulatype="inline"><tex Notation="TeX">$\hbox{m}\varepsilon$</tex></formula> and high-temperature stability.