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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 30, Iss. 13 — Jul. 1, 2012
  • pp: 2143–2150

Wavelength Interrogator for Optical Sensors Based on a Novel Thermo-Optic Tunable Filter in SOI

Vittorio M. N. Passaro, Andrei V. Tsarev, and Francesco De Leonardis

Journal of Lightwave Technology, Vol. 30, Issue 13, pp. 2143-2150 (2012)

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In this paper, the wavelength interrogation of optical sensors by novel thermo-optic tunable filters with multiple partially reflected slanted mirrors in silicon-on-insulator (SOI) technology is presented. The tunable filter is used both for tunable band selection of broadband light source interrogating the optical sensors, as well as for precise detection of interrogation optical wavelength. New interrogator design is numerically studied by 2-D finite-difference time-domain and finite-element method for a compact structure. The investigation demonstrates the performance of an interrogator on SOI, 1 cm long, having about 1 pm wavelength resolution and 1 ms scanning over 40 nm range at 1550 nm, with an operation power of about 16 mW.

© 2012 IEEE

Vittorio M. N. Passaro, Andrei V. Tsarev, and Francesco De Leonardis, "Wavelength Interrogator for Optical Sensors Based on a Novel Thermo-Optic Tunable Filter in SOI," J. Lightwave Technol. 30, 2143-2150 (2012)

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