Robust strain sensor based on multimode interference in single-mode–multimode–single-mode fiber structure
Document Type
Article
Publication Date
1-1-2018
Abstract
Single-mode–multimode–single-mode (SMS) structure is demonstrated as a strain sensor. The device is fabricated by splicing a section of multimode optical fiber (MMF) in between single-mode fibers (SMFs). The modal interference inside the structure produces a strong resonant transmission notch, which is sensitive to external perturbation. It was found that the position of the notch changed with strain at sensitivity of 1.3 nm/N. The device introduced here is simple to fabricate, robust and suitable for high temperature operation; hence, it is adequate for diverse sensing applications.
Keywords
Strain sensor, Optical interferometer, Multimode interference
Divisions
fac_eng
Funders
Malaysian Ministry of Higher Education (Grant No. FRGS/1/2015/SG02/UITM/03/3),University of Malaya (Grant. No. RU005J-2016)
Publication Title
Optoelectronics and Advanced Materials, Rapid Communications
Volume
12
Issue
5-6
Publisher
National Institute of Optoelectronics