Optical Fiber Sensing System Based on Long-Period Gratings for Remote Refractive Index Measurement in Aqueous Environments

摘要: Abstract In the field of aqueous environment studies, long-period fiber gratings are very attractive for real-time monitoring physical parameters, such as temperature and salinity. However, due to jacket removal, these fragile devices when applied in real conditions, where mechanical loads contamination with algae other organic materials must be taken into account. This work describes a refractive index sensing head that has been developed characterized situ measurement water salinity resistance hard conditions.