In-line Mach-Zehnder Interferometer based on Hybrid Structures for Refractive Index Sensing
A.H.M. Nasir1, M.R. Mokhtar2, N. S. M. Rodzi3
1A. H. M. Nasir, Department of Engineering, Multimedia University, Cyberjaya, Malaysia.
2M. R. Mokhtar, Department of Electronic Engineering, Research Institute for Digital Connectivity, Multimedia University, Cyberjaya, Malaysia.
3N. S. M. Rodzi, Department of Electrical Engineering, Multimedia University, Cyberjaya, Malaysia.
Manuscript received on 25 September 2019 | Revised Manuscript received on 04 October 2019 | Manuscript Published on 22 October 2019 | PP: 36-40 | Volume-8 Issue-3S October 2019 | Retrieval Number: C10081083S19/2019©BEIESP | DOI: 10.35940/ijrte.C1008.1083S19
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A Mach-Zehnder interferometer (MZI) built using several concatenated different structures is proposed as a refractive index sensor. This sensor is comprised of a microbubble, a section of reduced cladding fiber (RCF) and a core-offset single-mode fiber (SMF). These structures are joined together through specialized arc fusion splicing procedures. The sensor is characterised by immersing it in Cargille oil with refractive index values ranging from 1.30 to 1.39. The sensor exhibits linearity in respect to the refractive index changes, with a good sensitivity of 144.42 nm/RIU. The proposed MZI has the advantages of cost effective, repeatable fabrication, compact size and high sensitivity, which make it a promising sensor.
Keywords: Hybrid Optical Sensor, Mach-Zehnder Interferometer, Microbubble, Reduced Cladding Fiber, Refractive Index Sensor.
Scope of the Article: Innovative Sensing Cloud and Systems