K. E. MEDRI ET AL.
Copyright © 2011 SciRes. OPJ
154
wave-overlay interaction using the high dielectric.The
sensitivity of the guided light to variations in the clad-
ding refractive index was examined us ing FDTD simula-
tions and transmission spectrums are obtained for various
superstrate refractive indices. The response of the sensor
is examined using both the change in the Bragg dip
wavelength and transmitted signal strength and is shown
to provide an index resolution of up to one part in 105.
5. Acknowledgements
The authors gratefully acknowledge NSERC, CIPI, and
the reviewers for their support.
6. References
[1] M. Kawachi, “Recent Progress in Silica-Based Planar
Lightwave Circuits on Silicon,” IEE Proceedings: Opto-
electronics, Vol. 143, No. 5, 1996, pp. 257-262.
doi:10.1049/ip-opt:19960493
[2] J. Broquin, “Glass Integrated Optics: State of the Art and
Position toward Other Technologies,” Proceedings of
SPIE, Vol. 6475, No. 7, 2007, pp. 1-13.
doi:10.1117/12.706785
[3] P. Prabhathan, V. M. Murukeshan and J. Zhang, “Com-
pact SOI Nanowire Refractive Index Sensor Using Phase
Shifted Bragg Grating,” Optics Express, Vol. 17, No. 17,
2009, pp. 15330-15341. doi:10.1364/OE.17.015330
[4] S. Mandal, R. Akhmechet, L. Chen, S. Nugen, A. Baeum-
ner and D. Erickson, “Nanoscale Optofluidic Sensor Ar-
rays for Dengue Virus Detection,” Nanoengineering:
Fabrication, Properties, Optics and Devices IV, The In-
ternational Society for Optical Engineering (SPIE), 2007.
[5] V. M. N. Passaro, R. Loiacono, G. D’Amico and F. De
Leonardis, “Design of Bragg Grating Sensors Based on
Submicrometer Optical Rib Waveguides in SOI,” IEEE
Sensors Journal, Vol. 8, No. 9, 2008, pp. 1603-1611.
doi:10.1109/JSEN.2008.929068
[6] K. E. Medri and R. C. Gauthier, “Patterned Overlays:
Thin Silicon Layer Applied to Glass Waveguides,” Pro-
ceedings of SPIE, Vol. 7943, No. L, 2011, pp. 1-12.
doi:10.1117/12.873426
[7] K. Okamoto, “Fundamentals of Optical Waveguides,” Se-
cond Edition. Academic Press, Cleveland, 2005.
[8] C. Chen, “Foundations for Guided-Wave Optics,” John
Wiley, Hoboken, 2006. doi:10.1002/0470042222
[9] C. Chen, “Development and Implementation of Novel
Numerical Techniques for Integrated Optics and Micro-
wave Planar Structures,” Ottawa-Carleton Institute for
Electrical and Computer Engineering, Ottawa, 2000.
[10] A. Yimit, A. G. Rossberg, T. Amemiya and K. Itoh,
“Thin Film Composite Optical Waveguides for Sensor
Applications: A Review,” Talanta, Vol. 65, No. 5, 2005,
pp. 1102-1109. doi:10.1016/j.talanta.2004.06.045
[11] A. Yariv, “Coupled-Mode Theory for Guided-Wave Op-
tics,” IEEE Journal of Quantum Electronics, Vol. 9, No.
9, 1973, pp. 919-933. doi:10.1109/JQE.1973.1077767
[12] A. F. Oskooi, D. Roundy, M. Ibanescu, P. Bermel, J. D.
Joannopoulos and S. G. Johnson, “Meep: A Flexible
Free-Software Package for Electromagnetic Simulations
by the FDTD Method,” Computer Physics Communica-
tions, Vol. 181, No. 2, 2010, pp. 687-702.
doi:10.1016/j.cpc.2009.11.008
[13] I. Giuntoni, M. Krause, H. Renner, J. Bruns, A. Gajda, E.
Brinkmeyer and K. Petermann, “Numerical Survey on
Bragg Reflectors in Silicon-On-Insulator Waveguides,”
5th International Conference on Group IV Photonics,
17-19September 2008, pp. 285-287.
[14] M. Hammer and O. V. Ivanova, “Effective Index Appro-
ximations of Photonic Crystal Slabs: A 2-to-1-D Assess-
ment,” Optical and Quantum Electronics, Vol. 41, No. 4,
2009, pp. 267-283. doi:10.1007/s11082-009-9349-3
[15] B. E. A. Saleh and M. C. Teich, “Fundamentals of Pho-
tonics,” John Wiley, Hoboken, 1991.
doi:10.1002/0471213748
[16] A. H. Harvey, J. S. Gallagher and J. M. H. L. Sengers,
“Revised Formulation for the Refractive Index of Water
and Steam as a Function of Wavelength, Temperature and
Density,” Journal of Physical and Chemical Reference
Data, Vol. 27, No. 7, 1998, pp. 761-74.
[17] F.J. Bates, et al., “Polarimetry, Saccharimetry and the
Sugars,” National Bureau of Standards C440, U.S. Gov-
ernment Printing Office, Wahington, DC, 1942.
[18] R. C. Weast, “Handbook of Chemistry and Physics,”
CRC Press, Cleveland, 1977.
[19] A. Iadicicco, A. Cusano, A. Cutolo, R. Bernini and M.
Giordano, “Thinned Fiber Bragg Gratings as High Sensi-
tivity Refractive Index Sensor,” IEEE Photonics Tech-
nology Letters, Vol. 16, No. 4, 2004, pp. 1149-1151.
doi:10.1109/LPT.2004.824972
[20] A. Iadicicco, S. Campopiano, A. Cutolo, M. Giordano
and A. Cusano, “Refractive Index Sensor Based on Mi-
crostructured Fiber Bragg Grating,” IEEE Photonics
Technology Letters, Vol. 17, No. 6, 2005, pp. 1250-1252.
doi:10.1109/LPT.2005.846570
[21] L. Poladian, F. Ladouceur and P. D. Miller, “Effects of
Surface Roughness on Gratings,” Journal of the Optical
Society of America B (Optical Physics), Vol. 14, No. 6,
1997, pp. 1339-1344.