Magnetic Field Tunability of Square Tapered No-Core Fibers Based on Magnetic Fluid

Author

Yinping Miao ; Jixuan Wu ; Wei Lin ; Binbin Song ; Hao Zhang ; Kailiang Zhang ; Bo Liu ; Jianquan Yao

Author_Institution

Tianjin Key Lab. of Film Electron. & Communicate Devices, Tianjin Univ. of Technol., Tianjin, China

Volume

32

Issue

23

fYear

2014

fDate

Dec.1, 1 2014

Firstpage

4600

Lastpage

4605

Abstract

A magnetic-field-tuned photonics device based on magnetic fluid (MF) and a square tapered no-core fiber (NCF) sandwiched between two single-mode fibers (SMFs) has been demonstrated experimentally and theoretically. The enhanced evanescent field effect in the NCF is achieved by tapering the square NCF utilizing a fusion splicer. The spectral dependence of the proposed device on the applied magnetic-field intensity has been investigated. The results indicate that the multimode interference spectrum exhibits a blue-shift with the increment of the magnetic-field intensity. A maximal sensitivity of -18.7 pm/Oe is obtained for a magnetic field strength ranging from 25 to 450 Oe. The proposed tunable device has several advantages, including low cost, ease of fabrication, simple and compact structure, and high sensitivity. Therefore, the magnetic-field-tuned square tapered NCF is expected to find potential applications in the fields of optical fiber sensors, as well as fiber communications.

Keywords

fibre optic sensors; light interference; magnetic field measurement; magnetic fluids; applied magnetic-field intensity; blue-shift; evanescent field effect; fusion splicer; magnetic field strength; magnetic field tunability; magnetic fluid; multimode interference spectrum; single-mode fibers; spectral dependence; square tapered no-core fibers; Magnetic fields; Magnetic liquids; Optical fiber communication; Optical fiber sensors; Optical fibers; Refractive index; Magnetic field; magnetic field; magnetic fluid; square tapered no-core fiber;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2361789

Filename

6922594