基于表面等离子体共振技术的光子晶体光纤传感器研究
Research on Photonic Crystal Optical Fiber Sensor Based on Surface Plasmon Resonance Technology
马韬 1漆琦 1乌日娜1
作者信息
- 1. 沈阳理工大学/理学院 辽宁 沈阳 110159
- 折叠
摘要
为了实现对待测介质折射率的高灵敏度检测,设计并研究了一种基于表面等离子体共振技术的光子晶体光纤折射率传感器.该传感器的内外空气孔呈正六边形排列,在包层外壁上涂覆银-石墨烯纳米薄膜,通过纤芯基模和表面等离子体模的耦合程度来检测周围环境的折射率变化.研究表明,该传感器可以实现折射率在1.37～1.38范围内的检测,最高灵敏度可达40000nm/RIU,分辨率可达4.17×10-5RIU.
Abstract
In order to realize the high sensitivity detection of the measured medium refractive index,a photonic crystal optical fiber refractive index sensor based on surface plasmon resonance technology is designed and studied.The air holes in the inner and outer layers of the sensor are arranged in hexagonal manner,the outer wall of the cladding is coated with silver graphene nanofilms,the change of refractive index of the surrounding environment is detected by the coupling degree between the fiber core base mode and the surface plasma mode.Research shows that,the sensor can detect the refractive index in the range of 1.37-1.38,the maximum sensitivity of 40000 nm/RIU can be achieved,and the resolution of 4.17×10-5 RIU can be achieved.
关键词
光子晶体光纤/表面等离子体共振/折射率传感器Key words
photonic crystal optical fiber/surface plasmon resonance/refractive index sensor引用本文复制引用
出版年
2024
NETL
NSTL
万方数据