A study of bending effect on the femtosecond-pulse inscribed fiber Bragg gratings in a dual-core fiber

Sergey S. Yakushin, Alexey A. Wolf, Alexandr V. Dostovalov, Mikhail I. Skvortsov, Stefan Wabnitz, Sergey A. Babin

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Fiber Bragg gratings with different reflection wavelengths have been inscribed in different cores of a dual-core fiber section. The effect of fiber bending on the FBG reflection spectra has been studied. Various interrogation schemes are presented, including a single-end scheme based on a cross-talk between the cores that uses only standard optical components. Simultaneous interrogation of the FBGs in both cores allows to achieve a bending sensitivity of 12.8 pm/m−1, being free of temperature and strain influence. The technology enables the development of real-time bending sensors with high spatial resolution based on series of FBGs with different wavelength inscribed along the multi-core fiber.

Original languageEnglish
Pages (from-to)101-105
Number of pages5
JournalOptical Fiber Technology
Volume43
DOIs
Publication statusPublished - 1 Jul 2018

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