کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1537452 | 996588 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Highly sensitive bend sensor based on Mach–Zehnder interferometer using photonic crystal fiber Highly sensitive bend sensor based on Mach–Zehnder interferometer using photonic crystal fiber](/preview/png/1537452.png)
Optical fiber bend sensor with photonic crystal fiber (PCF) based Mach–Zehnder interferometer (MZI) is demonstrated experimentally. The results show that the PCF-based MZI is sensitive to bending with a sensitivity of 3.046 nm/m−1 and is independent on temperature with a sensitivity of 0.0019 nm/°C, making it the best candidate for temperature insensitive bend sensors. To that end, another kind of bend sensor with higher sensitivity of 5.129 nm/m−1 is proposed, which is constructed by combining an LPFG and an MZI with zero offset at the second splice mentioned above.
Research Highlights
► We fabricated a PCF-based MZI which has smooth and regular interference fringe.
► The PCF-MZI is sensitive to external bending with sensitivity of 3.046 nm/m–1.
► Such a device is insensitive to temperature with sensitivity of only 0.0019 nm/°C.
► Another MZI is constructed by combining a LPFG and a PCF-based MZI with zero offset.
► Such a device has a relative high bending sensitivity of 5.129 nm/m–1.
Journal: Optics Communications - Volume 284, Issue 12, 1 June 2011, Pages 2849–2853