Sensing based on Bloch surface wave and self-referenced guided mode resonances employing a one-dimensional photonic crystal

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F21%3A10247759" target="_blank" >RIV/61989100:27240/21:10247759 - isvavai.cz</a>

Result on the web

<a href="https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-9-12996&id=450115" target="_blank" >https://www.osapublishing.org/oe/fulltext.cfm?uri=oe-29-9-12996&id=450115</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/OE.421162" target="_blank" >10.1364/OE.421162</a>

Result language

angličtina

Original language name

Sensing based on Bloch surface wave and self-referenced guided mode resonances employing a one-dimensional photonic crystal

Original language description

Sensing abilities of a one-dimensional photonic crystal (1DPhC) represented by a multilayer dielectric structure are analyzed theoretically and experimentally, using a new wavelength interrogation interference method. The structure comprising a glass substrate and six bilayers of TiO2/SiO2 with a termination layer of TiO2 is employed in both gas sensing based on the Bloch surface wave (BSW) resonance and liquid analyte sensing based on a self-referenced guide-mode resonance (GMR). We model the spectral interference reflectance responses in the Kretschmann configuration with a coupling prism made of BK7 glass and show that a sharp dip with maximum depth associated with the BSW excitation is red-shifted as the refractive index (RI) changes in a range of 1-1.005. Thus, a sensitivity of 1456 nm per RI unit (RIU) and figure of merit (FOM) of 91 RIU-1 are reached. Similarly, we model the responses for aqueous solutions of ethanol to show that dips of maximum depth are associated with the GMRs, and the highest sensitivity and FOM reached are 751 nm/RIU and 25 RIU-1, respectively. Moreover, we show that one of the dips is with the smallest shift as the RI changes, and hence it can be used as a reference. The theoretical results are confirmed by the experimental ones when the BSW resonance is used in sensing of humid air with a sensitivity of 0.027 nm/%relative humidity (RH) and FOM of 1.4x10(-3) %RH-1. Similarly, the GMR is used in sensing of aqueous solutions of ethanol, and the highest sensitivity and FOM reached 682 nm/RIU and 23 RIU-1, respectively. The reference dip is also resolved and this self-reference makes the measurement more accurate and repeatable, and less sensitive to optomechanical drifts.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Optics Express

ISSN

1094-4087

e-ISSN

—

Volume of the periodical

29

Issue of the periodical within the volume

9

Country of publishing house

US - UNITED STATES

Number of pages

15

Pages from-to

12996-13010

UT code for WoS article

000643941900019

EID of the result in the Scopus database

2-s2.0-85105054726