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Sensors 2012, 12(11), 15558-15598;

Recent Advances in Integrated Photonic Sensors

Photonics Research Group, Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari, Via Edoardo Orabona 4, 70125 Bari, Italy
Author to whom correspondence should be addressed.
Received: 21 September 2012 / Revised: 30 October 2012 / Accepted: 5 November 2012 / Published: 9 November 2012
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Italy 2012)
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Nowadays, optical devices and circuits are becoming fundamental components in several application fields such as medicine, biotechnology, automotive, aerospace, food quality control, chemistry, to name a few. In this context, we propose a complete review on integrated photonic sensors, with specific attention to materials, technologies, architectures and optical sensing principles. To this aim, sensing principles commonly used in optical detection are presented, focusing on sensor performance features such as sensitivity, selectivity and rangeability. Since photonic sensors provide substantial benefits regarding compatibility with CMOS technology and integration on chips characterized by micrometric footprints, design and optimization strategies of photonic devices are widely discussed for sensing applications. In addition, several numerical methods employed in photonic circuits and devices, simulations and design are presented, focusing on their advantages and drawbacks. Finally, recent developments in the field of photonic sensing are reviewed, considering advanced photonic sensor architectures based on linear and non-linear optical effects and to be employed in chemical/biochemical sensing, angular velocity and electric field detection. View Full-Text
Keywords: chemical sensors; Fano resonance; Mach-Zehnder interferometer; Raman effect; ring resonator; silicon-on-insulator chemical sensors; Fano resonance; Mach-Zehnder interferometer; Raman effect; ring resonator; silicon-on-insulator

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Passaro, V.M.N.; Tullio, C.D.; Troia, B.; Notte, M.L.; Giannoccaro, G.; Leonardis, F.D. Recent Advances in Integrated Photonic Sensors. Sensors 2012, 12, 15558-15598.

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