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Design of Bragg Grating Sensors Based on Submicrometer Optical Rib Waveguides in SOI
A submicrometer integrated optical sensor based on Bragg gratings in silicon-on-insulator technology is theoretically proposed in this paper. The grating analysis is performed using a mixed numerical approach based on the finite-element method and coupled mode theory. The possibility to use third-or...
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Published in: | IEEE sensors journal 2008-09, Vol.8 (9), p.1603-1611 |
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creator | Passaro, V.M.N. Loiacono, R. D'Amico, G. De Leonardis, F. |
description | A submicrometer integrated optical sensor based on Bragg gratings in silicon-on-insulator technology is theoretically proposed in this paper. The grating analysis is performed using a mixed numerical approach based on the finite-element method and coupled mode theory. The possibility to use third-order instead of first-order grating is discussed and performances compared, thus overcoming fabrication problems associated to submicrometer scale features. A detection limit of approximately 10 -4 refractive index unit has been calculated for a 173-mum-long grating. Strategies to further improve this value have been discussed too. Finally, fabrication tolerances influence on optimized gratings has been investigated. |
doi_str_mv | 10.1109/JSEN.2008.929068 |
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The grating analysis is performed using a mixed numerical approach based on the finite-element method and coupled mode theory. The possibility to use third-order instead of first-order grating is discussed and performances compared, thus overcoming fabrication problems associated to submicrometer scale features. A detection limit of approximately 10 -4 refractive index unit has been calculated for a 173-mum-long grating. Strategies to further improve this value have been discussed too. 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Finally, fabrication tolerances influence on optimized gratings has been investigated.</description><subject>Bragg grating</subject><subject>Bragg gratings</subject><subject>Coupled mode analysis</subject><subject>Coupled modes</subject><subject>Diffraction gratings</subject><subject>Gratings (spectra)</subject><subject>integrated optics</subject><subject>Mathematical analysis</subject><subject>Optical design</subject><subject>Optical refraction</subject><subject>Optical sensors</subject><subject>Optical variables control</subject><subject>Optical waveguide theory</subject><subject>Optical waveguides</subject><subject>Performance analysis</subject><subject>Sensors</subject><subject>Silicon on insulator technology</subject><subject>silicon photonics</subject><subject>silicon-on-insulator (SOI)</subject><subject>Strategy</subject><subject>Tolerances</subject><issn>1530-437X</issn><issn>1558-1748</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqF0U1Lw0AQBuAgCtbqXfCyeNBT6mz2KzlarVopFmxFb8smmYQtbVJ3E8F_b0LFgwc9zRyeGZh5g-CUwohSSK4eF5OnUQQQj5IoARnvBQMqRBxSxeP9vmcQcqbeDoMj71cANFFCDYLlLXpbVqQuyNiZsiT3zjS2KskCK187T8bGY07qiizadGMzV2-wQUfm28ZmZk2ebUpezQeWrc3RE9u5-fQ4OCjM2uPJdx0GL3eT5c1DOJvfT2-uZ2HGYtGEEZc8KpjkhWCFzMEwQw3mhiHITHAq8yxK8yw1OcMChMpjSQvMeGoiJgCBDYPL3d6tq99b9I3eWJ_hem0qrFuvE2CSKsXZvzJWAhSVqpcXf0rGefdSiDp4_guu6tZV3b06lkzQiCayQ7BD3eO8d1jorbMb4z41Bd3npvvcdJ-b3uXWjZztRiwi_nAuIUm6S74AsueSlA</recordid><startdate>20080901</startdate><enddate>20080901</enddate><creator>Passaro, V.M.N.</creator><creator>Loiacono, R.</creator><creator>D'Amico, G.</creator><creator>De Leonardis, F.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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The grating analysis is performed using a mixed numerical approach based on the finite-element method and coupled mode theory. The possibility to use third-order instead of first-order grating is discussed and performances compared, thus overcoming fabrication problems associated to submicrometer scale features. A detection limit of approximately 10 -4 refractive index unit has been calculated for a 173-mum-long grating. Strategies to further improve this value have been discussed too. Finally, fabrication tolerances influence on optimized gratings has been investigated.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/JSEN.2008.929068</doi><tpages>9</tpages></addata></record> |
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subjects | Bragg grating Bragg gratings Coupled mode analysis Coupled modes Diffraction gratings Gratings (spectra) integrated optics Mathematical analysis Optical design Optical refraction Optical sensors Optical variables control Optical waveguide theory Optical waveguides Performance analysis Sensors Silicon on insulator technology silicon photonics silicon-on-insulator (SOI) Strategy Tolerances |
title | Design of Bragg Grating Sensors Based on Submicrometer Optical Rib Waveguides in SOI |
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