Analysis of an integrated optic micro racetrack resonator based biosensor

S. Malathi; Gopalkrishna Hegde; T. Srinivas; Ugra Mohan Roy

doi:10.1117/12.2049043

2 June 2014 Analysis of an integrated optic micro racetrack resonator based biosensor

S. Malathi, Gopalkrishna Hegde, T. Srinivas, Ugra Mohan Roy

Proceedings Volume 9234, International Conference on Experimental Mechanics 2013 and Twelfth Asian Conference on Experimental Mechanics; 923410 (2014) https://doi.org/10.1117/12.2049043
Event: International Conference on Experimental Mechanics 2013 and the Twelfth Asian Conference on Experimental Mechanics, 2013, Bangkok, Thailand

Abstract

Silicon-On- Insulator (SOI) technology has huge potential in fabricating compact devices for various applications such as integrated optic waveguides, directional couplers, resonators etc. In this work, we present the analysis of a biosensor based on an integrated optic racetrack resonator, interrogated by a bus waveguide. The biomaterial is applied as a cladding layer. Here we analyze the coupling between the resonator and the bus waveguide, and its dependence on the bio layer. In traditional analysis, the effective refractive index and resonator total path length are the factors influencing the resonant wavelength. Our analysis shows that all parametric values decrease with increase in waveguide width and spacing. The inclusion of waveguide mode overlap and perturbation in coupled mode equation results in enhanced resonator sensitivity of an order of magnitude

Citation Download Citation

S. Malathi, Gopalkrishna Hegde, T. Srinivas, and Ugra Mohan Roy "Analysis of an integrated optic micro racetrack resonator based biosensor", Proc. SPIE 9234, International Conference on Experimental Mechanics 2013 and Twelfth Asian Conference on Experimental Mechanics, 923410 (2 June 2014); https://doi.org/10.1117/12.2049043

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