The simulating of optical sensor based on selective resonance coupling
Subject Areas : Electronics Engineering
1 - Department of Electrical Engineering, Sofian Branch, Islamic Azad University, Sofian, Iran
Keywords:
Abstract :
Refractive index sensors are one of the most widely used sensors in the bioelectronics and optoelectronics industries. The use of materials and structures that can detect the refractive index of unknown materials has important applications in biochemistry and medical engineering. In this paper, a polymer-based dual-core photon crystal fiber is introduced to measure the refractive index of a fluid. The size of the holes of the analyte cores and the light-transmitting solid core are engineered to be able to pass the main single mode. Due to its cheapness, high mechanical ability and ease of fabrication, the photon crystal fiber substrate is made of PMMA polymer. After simulating the structure and using the existing mathematical relations and examining the diffusion modes, for the complete transfer of light from the solid core to the core of the analyte channel, a fiber length of 0.13 cm has been obtained. The simulation results show that for a refractive index of 1.44, a sensitivity value of 1000 and a detection limit can be achieved by this sensor. All simulation steps in the field of FDTD are obtained in Lumerical software.
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[6] Kwang Jo Lee, et all,“Refractive index sensor based on a polymer fiber directional coupler for low index sensing,”Opt. Express 19(5), 17497 (2014).
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[1] A. Argyros, “Microstructured polymer optical fibers,” J. Lightwave Technol. 27(11), 1571–1579 (2009).
[2] S. G. Leon-Saval, R. Lwin, and A. Argyros, “Multicore composite single-mode polymer fiber,” Opt. Express 20(1), 141–148 (2012).
[3] https://kb.lumerical.com/en/pic_passive_waveguide_couplers_evanescent.html
[4] I. M. White and X. D. Fan, “On the performance quantification of resonant refractive index sensors,” Opt. Express 16(2), 1020–1028 (2008).
[5] B. Sun, M.-Y. Chen, Y.-K. Zhang, J.-C. Yang, J.-Q. Yao, and H.-X. Cui, “Microstructured-core photonic-crystal fiber for ultra-sensitive refractive index sensing,” Opt. Express 19(5), 4091–4100 (2011).
[6] Kwang Jo Lee, et all,“Refractive index sensor based on a polymer fiber directional coupler for low index sensing,”Opt. Express 19(5), 17497 (2014).
[7] Graham E. Town, et all, “Microstructured optical fiberrefractive index sensor,”OPTICS LETTERS / Vol. 35, No. 6 / March 15, 2010.
[8] L. Rindorf, J. B. Jensen, M. Dufva, L. H. Pedersen, P. E. Høiby, and O. Bang, “Photonic crystal fiber long-period gratings for biochemical sensing,” Opt. Express 14(18), 8224–8231 (2006), http://www.opticsinfobase.org/abstract.cfm?id=97940&CFID=12293554&CFTOKEN=19235945