A Temperature Insensitive Strain Sensor using Long Period Grating Photonic Crystal Fiber.

Abstract

We present a study of strain and temperature sensitivities of long period gratings written on photonic crystal fiber. The role of dispersion factor ? into the sensitivities is elaborated. The polarity of the dispersion factor determines the polarity of the sensitivity. The effect of variation in the waveguide properties due to the structure of photonic crystal fibers to the sensitivities is explained. By selecting a proper LPG period and mode order a temperature insensitive strain sensor is realized.
DOI: 10.17762/ijritcc2321-8169.1505106