{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,30]],"date-time":"2026-03-30T12:36:00Z","timestamp":1774874160423,"version":"3.50.1"},"reference-count":26,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2018,5,25]],"date-time":"2018-05-25T00:00:00Z","timestamp":1527206400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>This paper discusses the physical nature and the numerical modeling of a novel approach of periodic structures for applications as photonic sensors. The sensing is based on the high sensitivity to the cover index change of the notch wavelength. This sensitivity is due to the effect of abnormal blocking of the guided wave propagating along the silicon wire with periodic strips overhead it through the silica buffer. The structure sensing is numerically modeled by 2D and 3D finite difference time domain (FDTD) method, taking into account the waveguide dispersion. The modeling of the long structures (more than 1000 strips) is accomplished by the 2D method of lines (MoL) with a maximal implementation of the analytical feature of the method. It is proved that the effect of abnormal blocking could be used for the construction of novel types of optical sensors.<\/jats:p>","DOI":"10.3390\/s18061707","type":"journal-article","created":{"date-parts":[[2018,5,28]],"date-time":"2018-05-28T03:54:21Z","timestamp":1527479661000},"page":"1707","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Numerical Simulation of a Novel Sensing Approach Based on Abnormal Blocking by Periodic Grating Strips near the Silicon Wire Waveguide"],"prefix":"10.3390","volume":"18","author":[{"given":"Andrei","family":"Tsarev","sequence":"first","affiliation":[{"name":"Laboratory of Optical Materials and Structures, Rzhanov Institute of Semiconductor Physics, SB RAS, 630090 Novosibirsk, Russia"},{"name":"Laboratory of Semiconductor and Dielectric Materials, Physics Department, Novosibirsk State University, 630090 Novosibirsk, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eugeny","family":"Kolosovsky","sequence":"additional","affiliation":[{"name":"Laboratory of Optical Materials and Structures, Rzhanov Institute of Semiconductor Physics, SB RAS, 630090 Novosibirsk, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Francesco","family":"De Leonardis","sequence":"additional","affiliation":[{"name":"Photonics Research Group, Dipartimento di Ingegneria Elettrica e dell\u2019Informazione, Politecnico di Bari, Via E. Orabona 4, 70125 Bari, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0802-4464","authenticated-orcid":false,"given":"Vittorio M. N.","family":"Passaro","sequence":"additional","affiliation":[{"name":"Photonics Research Group, Dipartimento di Ingegneria Elettrica e dell\u2019Informazione, Politecnico di Bari, Via E. Orabona 4, 70125 Bari, Italy"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,5,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"268","DOI":"10.1109\/JLT.1987.1075493","article-title":"Directional couplers made of nonidentical asymmetric slabs. Part II: Grating-assisted couplers","volume":"LT-5","author":"Marcuse","year":"1987","journal-title":"J. Lightw. Technol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1159","DOI":"10.1364\/OL.22.001159","article-title":"Grating-assisted couplers with broadband characteristics","volume":"22","author":"Zhang","year":"1997","journal-title":"Opt. Lett."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"973","DOI":"10.1109\/50.850743","article-title":"Optimal design of grating-assisted directional couplers","volume":"18","author":"Passaro","year":"2000","journal-title":"J. Lightw. Technol."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2749","DOI":"10.1364\/OL.29.002749","article-title":"Compact efficient broadband grating coupler for silicon-on-insulator waveguides","volume":"29","author":"Taillaert","year":"2004","journal-title":"Opt. Lett."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1363","DOI":"10.1109\/JSTQE.2006.884409","article-title":"Design and Simulation of an Integrated Fiber-to-Chip Coupler for Silicon-on-Insulator Waveguides","volume":"12","author":"Doylend","year":"2006","journal-title":"IEEE J. Sel. Top. Quantum Electron."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1968","DOI":"10.1109\/JLT.2004.833306","article-title":"Tunable Notch Filter Using a Thermooptic Long-Period Grating","volume":"22","author":"Kwon","year":"2004","journal-title":"J. Lightw. Technol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"1694","DOI":"10.1109\/50.712255","article-title":"Efficient Analysis of Periodic Structures","volume":"16","author":"Helfert","year":"1998","journal-title":"J. Lightw. Technol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"2011","DOI":"10.1063\/1.102148","article-title":"Grating-assisted InGaAsP\/InP vertical codirectional coupler filter","volume":"55","author":"Alferness","year":"1989","journal-title":"Appl. Phys. Lett."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"3633","DOI":"10.1364\/OE.21.003633","article-title":"Silicon photonic grating-assisted, contra-directional couplers","volume":"21","author":"Shi","year":"2013","journal-title":"Opt. Express"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"162","DOI":"10.1364\/OL.39.000162","article-title":"Widely tunable grating-assisted heterogeneous silicon nitride\/polymer waveguide coupler","volume":"39","author":"Zhang","year":"2014","journal-title":"Opt. Lett."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"13095","DOI":"10.1364\/OE.17.013095","article-title":"New wide strip and grating loaded quasi-single-mode waveguide on SOI","volume":"17","author":"Tsarev","year":"2009","journal-title":"Opt. Express"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"58","DOI":"10.1070\/QEL16001","article-title":"Abnormal blocking of a guided mode propagating in a silicon optical waveguide with periodic tunnel coupling","volume":"47","author":"Kolosovskii","year":"2017","journal-title":"Quantum Electron."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"2613","DOI":"10.1109\/LPT.2005.859132","article-title":"Efficient silicon-on-insulator fiber coupler fabricate during 248-nm-deep UV lithography","volume":"17","author":"Roelkens","year":"2005","journal-title":"IEEE Photonics Technol. Lett."},{"key":"ref_14","unstructured":"Rsoft FullWave by SYNOPSYS (2018, January 18). Photonic Design Software. Available online: https:\/\/www.synopsys.com\/optical-solutions\/rsoft.html."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"4977","DOI":"10.1364\/OE.15.004977","article-title":"Optical sensing by optimized silicon slot waveguides","volume":"15","author":"Passaro","year":"2007","journal-title":"Opt. Express"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"197","DOI":"10.1109\/JPHOT.2009.2031596","article-title":"Label-free biosensing with a slot-waveguide-based ring resonator in silicon on insulator","volume":"1","author":"Claes","year":"2009","journal-title":"IEEE Photon. J."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Schmidt, S., Flueckiger, J., Wu, W., Grist, S.M., Talebi Fard, S., Donzella, V., Khumwan, P., Thompson, E.R., Wang, Q., and Kulik, P. (2014, January 17\u201320). Improving the performance of silicon photonic rings, disks, and Bragg gratings for use in label-free biosensing. Proceedings of the Biosensing and Nanomedicine VII, San Diego, CA, USA.","DOI":"10.1117\/12.2062389"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"15672","DOI":"10.1364\/OE.24.015672","article-title":"Sub-wavelength grating for enhanced ring resonator biosensor","volume":"24","author":"Flueckiger","year":"2016","journal-title":"Opt. Express"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"2169","DOI":"10.1364\/AO.25.002169","article-title":"Dual effective-index method for the analysis of rectangular dielectric waveguides","volume":"25","author":"Chiang","year":"1986","journal-title":"Appl. Opt."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"293","DOI":"10.1364\/OL.38.000293","article-title":"Modified effective index method to fit the phase and group index of 3D photonic wire waveguide","volume":"38","author":"Tsarev","year":"2013","journal-title":"Opt. Lett."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"3627","DOI":"10.1364\/OL.39.003627","article-title":"Experimental demonstration of original optical filter based on multiply coupled waveguides","volume":"39","author":"Tsarev","year":"2014","journal-title":"Opt. Lett."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"7610","DOI":"10.1364\/OE.15.007610","article-title":"Silicon-on-insulator microring resonator for sensitive and label-free biosensing","volume":"15","author":"Bartolozzi","year":"2007","journal-title":"Opt. Express"},{"key":"ref_23","unstructured":"(2015, January 01). MathWorks. Available online: www.mathworks.com."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"459","DOI":"10.1364\/JOSAB.8.000459","article-title":"Method of lines for the analysis of strip-loaded optical waveguides","volume":"8","author":"Rogge","year":"1991","journal-title":"Opt. Soc. Am. B"},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"150","DOI":"10.1109\/2944.826883","article-title":"Numerical techniques for modeling guided-wave photonic devices","volume":"6","author":"Scarmozzino","year":"2000","journal-title":"IEEE J. Sel. Top. Quantum Electron."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1204","DOI":"10.1109\/JLT.2002.800350","article-title":"Analysis of Deep Waveguide Gratings: An Efficient Cascading and Doubling Algorithm in the Method of Lines Framework","volume":"20","author":"Jamid","year":"2002","journal-title":"J. Lightw. Technol."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/18\/6\/1707\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T15:05:53Z","timestamp":1760195153000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/18\/6\/1707"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,5,25]]},"references-count":26,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2018,6]]}},"alternative-id":["s18061707"],"URL":"https:\/\/doi.org\/10.3390\/s18061707","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,5,25]]}}}