Abstract

We selectively inscribe 2º and 7º Tilted Fiber Bragg Gratings (TFBGs) in a seven-core fiber. We use the crosstalk between cores induced by the TFBGs for temperature and refractive index sensing. We have demonstrated that the higher the tilted angle the more sensitive sensor. Nearly 20 dB of optical power variation has been retrieved in a refractive index change of 0.08.

© 2018 The Author(s)

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