Fabry-Perot Cavity Based on Hollow-Core Ring Photonic Crystal Fiber for Pressure Sensing

被引：17

作者：

Ferreira, Marta S. ^{[1
,2
]}

Bierlich, Joerg ^{[3
]}

Lehmann, H. ^{[3
]}

Schuster, Kay ^{[3
]}

Kobelke, Jens ^{[3
]}

Santos, Jose Luis ^{[1
,2
]}

Frazao, Orlando ^{[1
]}

机构：

[1] INESC Porto, P-4169007 Oporto, Portugal

[2] Univ Porto, Fac Ciencias, P-4169007 Oporto, Portugal

[3] Inst Photon Technol IPHT, D-07745 Jena, Germany

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2012年 / 24卷 / 23期

关键词：

Interferometry; optical fiber sensor; photonic crystal fiber; REFRACTIVE-INDEX; INTERFEROMETER; LASER; SENSORS; AIR;

D O I：

10.1109/LPT.2012.2222368

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

An interferometric Fabry-Perot cavity based on hollow-core ring photonic crystal fiber (HCR-PCF) for pressure sensing is proposed. The sensing head is formed by splicing a small section of HCR-PCF to standard single mode fiber. The spectral response depends on the cavity length due to the geometry of the HCR-PCF. The sensing head is subjected to methane pressure variations, where it exhibits a sensitivity of 0.82 nm/MPa. Its response to nitrogen pressure variation is also studied. The sensing head's intrinsic sensitivity to the nitrogen refractive index variations inside the hollow-core is also estimated. Finally, temperature measurement is performed and a sensitivity of 3.77 pm/degrees C is obtained for temperatures below 200 degrees C.

引用

页码：2122 / 2124

页数：3

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