An Optimized Macrobending-Fiber-Based Edge Filter

Abstract—An optimized all-fiber edge filter is developed, based on a one-turn macrobending bare fiber structure. The discrimi-nation range is 16.32 dB over a wavelength range from 1500 to 1600 nm, which can be employed for wavelength measurement ap-plications. It offers a simpler structure compared to the previously developed macrobending fiber loss edge filters, without an increase in the polarization-dependent loss. Index Terms—1060XP fiber, fiber edge filter, macrobending loss. I