Distributed polymer optical fiber sensors:a review and outlook

Aging degradation and seismic damage of civil infrastructures have become a serious issue for society,and one promising technology for monitoring their conditions is optical fiber sensing.Glass optical fibers have been predominantly used for the past several decades to develop fiber sensors,but currently polymer or plastic optical fibers(POFs)have also been used extensively to develop advanced fiber sensors because of their unique features,such as high flexibility,large breakage strain,and impact resistance.This review focuses on recently developed distributed and quasi-distributed POF-based sensing techniques based on Rayleigh scattering,Brillouin scattering,and fiber Bragg gratings.

Photonic gas sensors exploiting directly the optical properties of hybrid carbon nanotube localized surface plasmon structures

Weinvestigate the modification of the optical properties of carbon nanotubes(CNTs)resulting from a chemical reaction triggered by the presence of a specific compound(gaseous carbon dioxide(CO_(2)))and show this mechanism has important consequences for chemical sensing.CNTs have attracted significant research interest because they can be functionalized for a particular chemical,yielding a specific physical response which suggests many potential applications in the fields of nanotechnology and sensing.So far,however,utilizing their optical properties for this purpose has proven to be challenging.We demonstrate the use of localized surface plasmons generated on a nanostructured thin film,resembling a large array of nano-wires,to detect changes in the optical properties of the CNTs.Chemical selectivity is demonstrated using CO_(2) in gaseous form at room temperature.The demonstrated methodology results additionally in a new,electrically passive,optical sensing configuration that opens up the possibilities of using CNTs as sensors in hazardous/explosive environments.

Sensing Properties of Femtosecond Laser-Inscribed Long Period Gratings in Photonic Crystal Fiber

为在 photonic 水晶纤维的长时期纤维栅栏的铭文的近红外线的、高紧张 femtosecond 激光脉搏的使用被报导。在 photonic 水晶纤维的栅栏结构的形成由允许波浪指导，但是损害并且散布 femtosecond 铭文横梁的纤维结构是复杂的。对称、不对称的 femtosecond 激光铭文的效果被比较，到外部不安的长时期栅栏和他们的回答的极化特征被报导。

Research at the University of Kent and Subsequent Research Activities

在应用光学组，承担的作者研究活动在坎特伯雷的肯特的大学被考察在他从 19881992 和 19941996 的在那里的时间期间，由最近的研究的一篇摘要列在后面。兴趣的区域是高灵巧戒指共鸣器，悦耳的光过滤器，玻璃和聚合物里的新奇光纤维栅栏传感器， femtosecond 激光铭文和 micromachining，监视的环境污染，激活的 Pd 在硅上拍摄的氢和硅晶片上的杂质测量。