Introduction

摘要

Optical sensors and their applications have attracted considerable attention in recent years. The traditional optical sensors, especially fiber optic sensors, are widely used for measuring various physical and chemical parameters in many fields. Recent developments in nano- and micro-fibers, photonics crystal fibers, specially doped optical fibers, and fiber gratings, etc., not only provide great potential, but also solutions for a variety of sensing applications that are difficult to handle with conventional sensors. Furthermore, there are also many new sensing applications based on semiconductor devices (integrated optics platform and surface plasmon resonance effect, etc.). Besides point sensing, distributed optical sensors system and other sensors network also play a very role in this prospective field.