Research Publications
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Item Highly Sensitive Plasmonic Temperature Sensor Based on Photonic Crystal Surface Plasmon Waveguide(2013) Srivastava T.; Das R.; Jha R.We propose a highly sensitive temperature sensor based on photonic crystal surface plasmon waveguides comprising different plasmonic active metals such as gold, silver, and aluminum, utilizing surface plasmon resonance phenomenon. We found that the resonance wavelength can be easily and substantially tuned over a broad spectral range by changing the temperature and also by judiciously choosing the different plasmonic metals. Employing coupled mode theory, we found that the proposed sensor can be used in harsh environment with sensitivity as high as ?70 pm/K around telecommunication window. � 2012 Springer Science+Business Media, LLC.Item Photonic crystal surface plasmon waveguides sensor for high and accurate temperature measurement(2012) Jha R.; Srivastava T.; Das R.Highly sensitive, accurate and stable high temperature (800 K) sensor based on Photonic Crystal Surface Plasmon Waveguides is proposed. The PCW is based on widely used lithographic and nano-fabrication compatible materials like TiO 2 and SiO 2. Gold has been used as a SPR active metal. Employing coupled mode theory, the sensitivity is found to be as high as ? 66 pm/K. � 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).