Caroselli, R;
Ponce-Alcantara, S;
Prats Quilez, F;
Martin Sanchez, D;
Torrijos Moran, L;
Griol Barres, A;
Bellieres, L;
... Garcia-Ruperez, J; + view all
(2017)
Experimental study of the sensitivity of a porous silicon ring resonator sensor using continuous in-flow measurements.
Optics Express
, 25
(25)
pp. 31651-31659.
10.1364/OE.25.031651.
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Abstract
A highly sensitive photonic sensor based on a porous silicon ring resonator was developed and experimentally characterized. The photonic sensing structure was fabricated by exploiting a porous silicon double layer, where the top layer of a low porosity was used to form photonic elements by e-beam lithography and the bottom layer of a high porosity was used to confine light in the vertical direction. The sensing performance of the ring resonator sensor based on porous silicon was compared for the different resonances within the analyzed wavelength range both for transverse-electric and transverse-magnetic polarizations. We determined that a sensitivity up to 439 nm/RIU for low refractive index changes can be achieved depending on the optical field distribution given by each resonance/polarization.
| Type: | Article |
|---|---|
| Title: | Experimental study of the sensitivity of a porous silicon ring resonator sensor using continuous in-flow measurements |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OE.25.031651 |
| Publisher version: | https://doi.org/10.1364/OE.25.031651 |
| Language: | English |
| Additional information: | © 2017 Optical Society of America under the terms of the OSA Open Access Publishing Agreement (https://doi.org/10.1364/OA_License_v1). |
| Keywords: | (130.3120) Integrated optics devices; (130.6010) Sensors; (230.5750) Resonators. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10083000 |
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