| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6888269 | Optical Fiber Technology | 2018 | 5 Pages |
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 12.8â¯pm/mâ1, 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.
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Authors
Sergey S. Yakushin, Alexey A. Wolf, Alexandr V. Dostovalov, Mikhail I. Skvortsov, Stefan Wabnitz, Sergey A. Babin,