2D Propagation Simulation of Variation Parameters of U-shape Fiber Optic
Noor Azie Azura Mohd Arif1, Dilla Duryha Berhanuddin2, Abang Annuar Ehsan3

1Noor Azie Azura Mohd Arif*, Centre for Pre-university Studies, Universiti Malaysia Sarawak, 94300 Kota Samarahan, Sarawak, Malaysia.
2Dilla Duryha Berhanuddin, Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, Malaysia.
3Abang Annuar Ehsan, Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, Malaysia.

Manuscript received on December 02, 2020. | Revised Manuscript received on December 05, 2020. | Manuscript published on December 30, 2020. | PP:153-158 | Volume-10 Issue-2, December 2020. | Retrieval Number: 100.1/ijeat.B20821210220 | DOI: 10.35940/ijeat.B2082.1210220
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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: Fiber optic has extraordinary properties and is suitable in sensor applications due to its special potential. Currently, macro bending characteristics of newly developed hetero core fiber optic element are designed and evaluated. This paper presents the preliminary results obtained from the numerical simulation analysis of the bending sensitivity of U-shape fiber optics toward the 2D electromagnetic wave in terms of mesh, curvature radius, core fiber size, and turn number. Fiber optics with core sizes of 4, 9, 50, and 62.5 μm were designed. In addition, the combination of core diameters 50-4-50, 50-9-50, 62.5-4-62.5, and 62.5-9-62.5 μm is evaluated to compare the outcome of transmission power in terms of hetero core structure of fiber optic. Simulation is performed using COMSOL Multiphysics simulation tool. The developed U-shape fiber optic is designed to sense the distortion of reducing power transmission by comparing input and output power. Results show that the selected mesh depends on the size of geometry bending fiber optics, and fine and finer mesh is the best for U-shape fiber optic. Furthermore, the power flow on the fiber decreases with the decreasing curvature radius and increasing turn number. The fiber with a core size combination of 62.5–4–62.5 um has high sensitivity in terms of loss. The attained results possess higher potential in the field of sensor applications, such as displacement, strain, pressure, and monitoring respiration, on human body. This study serves as a basis for further investigation of nanomaterial coating on fiber optics, thereby enhancing its credibility for sensing.
Keywords: Wave optic, power flow, macro bending, hetero core, COMSOL Multiphysics.