Simulation of Optical Microfiber Loop Resonators for Ambient Refractive Index Sensing
Tóm tắt
Based on theoretical modeling and optimization, we exploit the application ofoptical microfiber loop resonators in ambient refractive index sensing. We set up a reliabletheoretical model and optimize the structural parameters of microfiber loop resonatorsincluding the radius of the microrfiber, the radius of the loop and the length of the couplingregion for higher sensitivity, wider dynamic measurement range, and lower detection limit.To show the convincible and realizable sensing ability we perform the simulation ofsensing an extreme small variation of ambient refractive index by employing a set ofexperimental data as the parameters in the expression of intensity transmission coefficient,and the detection limit reaches to a variation of ambient refractive index of 10-5 refractiveindex unit (RIU). This has superiority over the existing evanescent field-basedsubwavelength-diameter optical fiber refractive index sensor.
Từ khóa
Tài liệu tham khảo
Tong, 2003, Subwavelength-diameter silica wires for low-loss optical waveguiding, Nature, 426, 816, 10.1038/nature02193
Brambilla, 2004, Ultra-low-loss optical fiber nanotapers, Opt. Express, 12, 2258, 10.1364/OPEX.12.002258
Birks, 2004, Supercontinuum generation in submicron fibre waveguides, Opt. Express, 12, 2864, 10.1364/OPEX.12.002864
Sumetsky, 2004, Fabrication and study of bent and coiled free silica nanowires: Self-coupling microloop optical interferometer, Opt. Express, 12, 3521, 10.1364/OPEX.12.003521
Law, 2004, Nanoribbon waveguides for subwavelength photonics integration, Science, 305, 1269, 10.1126/science.1100999
Brambilla, 2006, Fabrication of optical fiber nanowires and their optical and mechanical Characterization, Electron. Lett., 42, 517, 10.1049/el:20060611
Foster, 2005, Soliton-effect compress of supercontinuum to few-cycle durations in photonic nanowires, Opt. Express, 13, 6848, 10.1364/OPEX.13.006848
Gattass, 2006, Supercontinuum generation in submicrometer diameter silica fibers, Opt. Express, 14, 9048, 10.1364/OE.14.009408
Lou, 2005, Modeling of silica nanowires for optical sensing, Opt. Express, 13, 213, 10.1364/OPEX.13.002135
Villatoro, 2004, Fast detection of hydrogen with nano fiber tapers coated with ultra thin palladium layers, Opt. Express, 13, 5087, 10.1364/OPEX.13.005087
Polynkin, 2005, Evanescent field-based optical fiber sensing devices for measuring the refractive index of liquid in microfluidic channels, Opt. Lett., 30, 1273, 10.1364/OL.30.001273
Sumetsky, 2005, Uniform coil optical resonator and waveguide: Transmission spectrum,eigenmodes, and dispersion relation, Opt. Express, 13, 4331, 10.1364/OPEX.13.004331
Sumetsky, M., Dulashko, Y., Fini, J. M., Hale, A., and DiGiovanni, D. J. Demonstration of a microfiber loop resonator. Anaheim, CA. Postdeadline Paper PDP10.
Sumetsky, 2006, The microfiber loop resonator: theory, experiment, and application, J. Lightw. Technol., 24, 242, 10.1109/JLT.2005.861127
Jiang, 2006, Demonstration of optical knot resontors, Appl. Phys. Lett., 88, 223501, 10.1063/1.2207986
Niehusmann, 2004, Ultrahighquality-factor silicon-on-insulator microring resonator, Opt. Lett., 29, 2861, 10.1364/OL.29.002861
Chao, 2006, Design and optimization of microring resonators in biochemical sensing applications, J. Lightw. Technol., 24, 1395, 10.1109/JLT.2005.863333
Snyder, A.W., and Love, J.D. (1983). Optical Waveguide Theory, Chapman & Hall.
Schwelb, 2004, Transmission, group delay, and dispersion in single-ring optical resonators and add/drop filters - A tutorial overview, J. Lightw. Technol., 22, 1380, 10.1109/JLT.2004.827666