Improved gas sensor with air-core photonic bandgap fiber

作     者：Saeed OLYAEE Hassan ARMAN 

作者机构：Nano-Photonic and Optoelectronic Research Laboratory (NORLab) Faculty of Electrical and Computer Engineering Shahid Rajaee Teacher Training University Tehran 16788-15811 Iran 

出 版 物：《Frontiers of Optoelectronics》 (光电子前沿（英文版）)

年 卷 期：2015年第8卷第3期

页      面：314-318页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0804[工学-仪器科学与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：based on work done at Nano-Photonics and Optoelectronics Research Laboratory (NORLab) at Shahid Rajaee Teacher Training University  Tehran  Iran 

主　　题：gas sensor photonic bandgap fiber (PBGF) sensitivity surface modes air core radius confinement loss 

摘      要：The propagation loss of a fiber can be increased by coupling core mode and surface mode which will deteriorate the performance of photonic bandgap fiber （PBGF）. In this paper, we presented an aircore PBGF for gas sensing applications. By designing A = 2.63 μm, d = 0.95 A, and Reore= 1.13 A, where A is the distance between the adjacent air holes, the fiber was single-mode, no surface mode was supported with fiber, and more than 90% of the optical power was confined in the core. Furthermore, with optimizing the fiber structural parameters, at wavelength of 2 = 1.55 μm that is in acetylene gas absorption line, significant relative sensitivity of 92.5%, and acceptable confinement loss of 0.09 dB/m, were simultaneously achieved.