Silica glass optical fibers have several applications such as remote sensing of mechanical
distortion, thermal fluctuations, pressure variations etc. besides telecommunications.
Commercially available optical fibers are usually protected with double, triple and more layers of
epoxy/acrylic polymer coatings. Devices consisting of this type of fibers are mounted on airplane
wings as a pressure sensor. These devices are subjected to a highly variable environmental and
operating conditions resulting in the introduction of mechanical as well as thermal stresses in the
fiber. The resulting stresses cannot be estimated without the accurate material properties of the
fiber, for examples, Young’s modulus, and Poisson ratio.
