Refractive Index Sensing by Using Nano Fiber Coupler

Sensors & Transducers

Liu Tiedong¹ 

[1] Northeast Forestry University faculty of Landscape Architecture, Heilongjiang Harbin, China;

关键词: Optical sensing;    Optical coupler;    Nano-fiber.;   

DOI  :  

来源: DOAJ

【 摘 要 】

Refractive index sensing by using nano fiber is popular researching direction which can find application in several of regions. In order to obtain the pressure, humidity, temperature and concentration in the detection environment, it is crucial that the detector is with nanoscale size and is sensitive to the change of the environment. In this paper, we present a refractive index sensor based on the coupler of the nano-fiber. Base on the mechanism of optical coupling, the proposed optical sensor can detect the local variation of the refractive index around the optical nano-fiber. By using finite difference time domain method, we numerically demonstrate the sensing capacity of the nano-optical coupler. The sensing mechanism underlying this method and the limitation of the propose sensor are also discussed.

【 授权许可】

Unknown