One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications
We demonstrate an efficient sensing of both gaseous and aqueous analytes utilizing Bloch surface waves (BSWs) and guided waves (GWs) excited on a truncated one-dimensional photonic crystal (1DPhC) composed of six TiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML"...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/8/561 |
| _version_ | 1797442645693300736 |
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| author | Tomas Fort Roman Kanok Petr Hlubina Pavel Pokorny Jaroslav Sobota |
| author_facet | Tomas Fort Roman Kanok Petr Hlubina Pavel Pokorny Jaroslav Sobota |
| author_sort | Tomas Fort |
| collection | DOAJ |
| description | We demonstrate an efficient sensing of both gaseous and aqueous analytes utilizing Bloch surface waves (BSWs) and guided waves (GWs) excited on a truncated one-dimensional photonic crystal (1DPhC) composed of six TiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>/SiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula> bilayers with a termination layer of TiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>. For the gaseous analytes, we show that 1DPhC can support the GW excited by an <i>s</i>-polarized wave and the theoretical shift of the resonance wavelength is linear for small changes in the analyte refractive index (RI), giving a constant RI sensitivity of 87 nm per RI unit (RIU). In addition, for the aqueous analytes, the GW excited by <i>s</i>-polarized and BSW by <i>p</i>-polarized waves can be resolved and exploited for sensing applications. We compare two designed and realized 1DPhCs with termination layer thicknesses of 60 nm and 50 nm, respectively, and show experimentally the differences in their very narrow reflectance and phase responses. An RI sensitivity and figure of merit as high as 544.3 nm/RIU and 303 RIU<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></semantics></math></inline-formula>, respectively, are obtained for the smaller thickness when both <i>s</i>- and <i>p</i>-polarized BSWs are excited. This is the first demonstration of both very deep BSW-based resonances in two orthogonal polarizations and a very narrow resonance in one of them. |
| first_indexed | 2024-03-09T12:44:57Z |
| format | Article |
| id | doaj.art-7b92c1fcefb84d16afcbdd982409b8b1 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T12:44:57Z |
| publishDate | 2022-08-01 |
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| series | Photonics |
| spelling | doaj.art-7b92c1fcefb84d16afcbdd982409b8b12023-11-30T22:13:32ZengMDPI AGPhotonics2304-67322022-08-019856110.3390/photonics9080561One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing ApplicationsTomas Fort0Roman Kanok1Petr Hlubina2Pavel Pokorny3Jaroslav Sobota4Institute of Scientific Instruments of the Czech Academy of Sciences, Kralovopolska 147, 612 64 Brno, Czech RepublicDepartment of Physics, Technical University Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech RepublicDepartment of Physics, Technical University Ostrava, 17. Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech RepublicInstitute of Scientific Instruments of the Czech Academy of Sciences, Kralovopolska 147, 612 64 Brno, Czech RepublicInstitute of Scientific Instruments of the Czech Academy of Sciences, Kralovopolska 147, 612 64 Brno, Czech RepublicWe demonstrate an efficient sensing of both gaseous and aqueous analytes utilizing Bloch surface waves (BSWs) and guided waves (GWs) excited on a truncated one-dimensional photonic crystal (1DPhC) composed of six TiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>/SiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula> bilayers with a termination layer of TiO<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mrow></mrow><mn>2</mn></msub></semantics></math></inline-formula>. For the gaseous analytes, we show that 1DPhC can support the GW excited by an <i>s</i>-polarized wave and the theoretical shift of the resonance wavelength is linear for small changes in the analyte refractive index (RI), giving a constant RI sensitivity of 87 nm per RI unit (RIU). In addition, for the aqueous analytes, the GW excited by <i>s</i>-polarized and BSW by <i>p</i>-polarized waves can be resolved and exploited for sensing applications. We compare two designed and realized 1DPhCs with termination layer thicknesses of 60 nm and 50 nm, respectively, and show experimentally the differences in their very narrow reflectance and phase responses. An RI sensitivity and figure of merit as high as 544.3 nm/RIU and 303 RIU<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></semantics></math></inline-formula>, respectively, are obtained for the smaller thickness when both <i>s</i>- and <i>p</i>-polarized BSWs are excited. This is the first demonstration of both very deep BSW-based resonances in two orthogonal polarizations and a very narrow resonance in one of them.https://www.mdpi.com/2304-6732/9/8/561photonic crystalBloch surface wavetermination layerreflectancephase shiftKretschmann configuration |
| spellingShingle | Tomas Fort Roman Kanok Petr Hlubina Pavel Pokorny Jaroslav Sobota One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications Photonics photonic crystal Bloch surface wave termination layer reflectance phase shift Kretschmann configuration |
| title | One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications |
| title_full | One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications |
| title_fullStr | One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications |
| title_full_unstemmed | One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications |
| title_short | One-Dimensional Photonic Crystals with Different Termination Layer Thicknesses and Very Narrow Bloch Surface Wave and Guided Wave Based Resonances for Sensing Applications |
| title_sort | one dimensional photonic crystals with different termination layer thicknesses and very narrow bloch surface wave and guided wave based resonances for sensing applications |
| topic | photonic crystal Bloch surface wave termination layer reflectance phase shift Kretschmann configuration |
| url | https://www.mdpi.com/2304-6732/9/8/561 |
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