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Temperature dependence of a macrobending edge filter based on a high-bend loss fiber.

The temperature dependence of a macrobending bare-fiber-based edge filter is investigated both theoretically and experimentally. The fiber used is a high-bend loss fiber, type 1060XP. The experimental results show a good agreement with the proposed theoretical model over a temperature range from 0 degrees C to 80 degrees C. It is shown that the strong temperature dependence of a high-bend loss fiber has a significant influence on the performance of a fiber edge filter used in a wavelength measurement application. However, it is also concluded that such a temperature-dependent performance can be beneficially utilized in a fiber temperature sensing application.