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应用光学 2011, Vol. 32 (4) :744 -748
引用: 郭夏锐,杨德兴,空芯带隙型光子晶体光纤整体空气孔包层导光特性研究[J].应用光学,2011,32(4):744-748
Cite:GUO Xia-rui,Propagating light with the full cladding of hollow-core photonic crystal fiber[J]. Journal of Applied Optics,2011,32(4):744-748
空芯带隙型光子晶体光纤整体空气孔包层导光特性研究
郭夏锐1,2; 杨德兴2
1. 中国空间技术研究院北京空间机电研究所, 北京100190;
2. 西北工业大学理学院, 陕西西安710072
Propagating light with the full cladding of hollow-core photonic crystal fiber
GUO Xia-rui1,2; YANG De-xing2
1. Beijing Institute of Space Mechanics and Electricity, China Academy of Space Technology, Beijing 100190,China; 2. School of Science, Northwestern Polytechnical University, Xi-an 710072, China
全文:     原文
摘要: 传统光纤包层中仅存在泄漏的倏逝波,能量较小,不利于包层传感的应用。增大包层中的能量,实现整体包层导光是提高光纤传感灵敏度的有效途径。从理论上分析了利用空芯带隙型光子晶体光纤(HC-PCF)包层进行导光的机理。在实验上选用带隙外的冷光源和激光对一种典型结构的HC-PCF进行了空气孔包层的导光实验,并利用折射率引导型光子晶体光纤和单模光纤进行对比实验。结果表明,带隙范围外光波在HC-PCF中传输时将不受禁带效应的约束泄露至包层中重新分布。包层中SiO2与空气孔的周期型结构将光波约束在高折射率介质中,实现HC-PCF整体空气孔包层中光波的稳定传输。PBG-PCF包层的整体导光在传感上有提高灵敏度的潜在价值。
关键词光纤光学;光子晶体光纤;光子带隙;光纤传感;倏逝波
分类号:

TN25

Abstract: Conventional fiber cladding only has leaking evanescent wave with low energy, which prevents the application of cladding sensing. Guiding light in the full cladding is expected to improve the sensitivity of hollow-core photonic crystal fiber (HC-PCF) application for material sensing. An approach to increase the energy transmitting in the cladding was theoretical analyzed. The light guidance experiments of air-hole cladding of HC-PCF were carried out by using a cold light source and a laser. The contrast experiments between total internal reflection-photonic crystal fiber (TIR-PCF) and single-mode fiber (SMF) were done. The results indicated that, by choosing appropriate wavelength, the light in HC-PCF leaked entirely into the cladding and propagated in the air-suspended silica cores between the air holes, which was different from TIP-PCF and SMF-28.
Keywords: fiber optics photonic crystal fiber photonic band gap fiber sensing evanescent wave
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