Frontiers of Optoelectronics, 2015, 8 (3): 314, 网络出版: 2016-01-06
Improved gas sensor with air-core photonic bandgap fiber
Improved gas sensor with air-core photonic bandgap fiber
gas sensor gas sensor photonic bandgap fiber (PBGF) photonic bandgap fiber (PBGF) sensitivity sensitivity surface modes surface modes air core radius air core radius confinement loss 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 Λ = 2.63 μm, d = 0.95 Λ, and Rcore= 1.13 Λ, where Λ 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 l = 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.
Abstract
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 Λ = 2.63 μm, d = 0.95 Λ, and Rcore= 1.13 Λ, where Λ 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 l = 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.
Saeed OLYAEE, Hassan ARMAN. Improved gas sensor with air-core photonic bandgap fiber[J]. Frontiers of Optoelectronics, 2015, 8(3): 314. Saeed OLYAEE, Hassan ARMAN. Improved gas sensor with air-core photonic bandgap fiber[J]. Frontiers of Optoelectronics, 2015, 8(3): 314.