Temperature Dependence of Plastic Clad Silica (PCS) Fiber Characteristics

A Review of Recent Developments in Fiber Optic Sensor Technology

“…• C. Various loss mechanisms can be utilized in distributed sensing, such as the temperature dependence of bending loss in plastic clad (PCS) fibers [88], evanescent field radiative loss due to external refractive index changes (due to for instance temperature variation in a fixed external medium, or liquid leakage), or continuous microbending loss in fiber. This latter approach has been demonstrated with a fiber strung along a "zigzag" path and attached to a structure and using a fiber sheathed with a spiral jacket to produce localized microbending when lateral pressure is applied [89].…”

Distributed and Multiplexed Fiber Optic Sensors

“…Various other loss mechanisms can be utilized in distributed sensing, such as the temperature dependence of bending loss in plastic-clad silica (PCS) fibers [16], evanescent field radiative loss due to external refractive index changes [17] (due to, for instance, temperature variation in a fixed external medium, or liquid leakage), or continuous microbending loss in fiber [18]. Quasi-continuous microbending loss can be introduced in a fiber by stringing it along a zigzag path attached to a structure, or using a fiber sheathed with a spiral jacket to produce localized microbending when lateral pressure is applied, as shown in Fig.…”