[INVITED] Subwavelength structures for silicon photonics biosensing
•Subwavelength waveguides are very attractive for achieving high performance sensors.•The standard 220 nm silicon-thickness is not optimal for sensing purposes.•Coherent interferometric architectures enable unambiguous and low cost biosensors.•In the mid infrared, subwavelength structures show a str...
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| Veröffentlicht in: | Optics and laser technology 2019-01, Vol.109, p.437-448 |
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| creator | Wangüemert-Pérez, J. Gonzalo Hadij-ElHouati, Abdelfettah Sánchez-Postigo, Alejandro Leuermann, Jonas Xu, Dan-Xia Cheben, Pavel Ortega-Moñux, Alejandro Halir, Robert Molina-Fernández, Íñigo |
| description | •Subwavelength waveguides are very attractive for achieving high performance sensors.•The standard 220 nm silicon-thickness is not optimal for sensing purposes.•Coherent interferometric architectures enable unambiguous and low cost biosensors.•In the mid infrared, subwavelength structures show a strong potential for sensing.
Silicon photonic biosensors hold the potential for highly accurate, yet low cost point-of-care devices. Maximizing the sensitivity of the sensing chips while reducing the complexity and cost of the read-out system is pivotal to realize this potential. Here we present an extensive analysis, both from a practical and a theoretical perspective, of current biosensors, and analyze how subwavelength structures can be exploited to enhance their sensitivity. This study is not restricted just to the near-infrared band as we also determine the sensing capabilities of the suspended silicon waveguides with subwavelength metamaterial cladding working in the mid-infrared range. These waveguides have been recently proposed to cover the full transparency window of silicon (λ |
| doi_str_mv | 10.1016/j.optlastec.2018.07.071 |
| format | Article |
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Silicon photonic biosensors hold the potential for highly accurate, yet low cost point-of-care devices. Maximizing the sensitivity of the sensing chips while reducing the complexity and cost of the read-out system is pivotal to realize this potential. Here we present an extensive analysis, both from a practical and a theoretical perspective, of current biosensors, and analyze how subwavelength structures can be exploited to enhance their sensitivity. This study is not restricted just to the near-infrared band as we also determine the sensing capabilities of the suspended silicon waveguides with subwavelength metamaterial cladding working in the mid-infrared range. These waveguides have been recently proposed to cover the full transparency window of silicon (λ<∼8.5 μm), where the fingerprint spectral region of many molecules takes place and so a plethora of evanescent field absorption-based applications will be developed in the near future.</description><identifier>ISSN: 0030-3992</identifier><identifier>EISSN: 1879-2545</identifier><identifier>DOI: 10.1016/j.optlastec.2018.07.071</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Biosensors ; Cladding ; Coherent multi-port sensing architecture ; Metamaterials ; Optical properties ; Photonics ; Read out systems ; Sensitivity analysis ; Sensitivity enhancement ; Silicon ; Silicon photonics ; Subwavelength waveguides ; Waveguides</subject><ispartof>Optics and laser technology, 2019-01, Vol.109, p.437-448</ispartof><rights>2018 The Authors</rights><rights>Copyright Elsevier BV Jan 2019</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c392t-aae5e5ce998390782305f1ffb541dd6ed2ce9091a3cf8d63412d888d971458593</citedby><cites>FETCH-LOGICAL-c392t-aae5e5ce998390782305f1ffb541dd6ed2ce9091a3cf8d63412d888d971458593</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.optlastec.2018.07.071$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Wangüemert-Pérez, J. Gonzalo</creatorcontrib><creatorcontrib>Hadij-ElHouati, Abdelfettah</creatorcontrib><creatorcontrib>Sánchez-Postigo, Alejandro</creatorcontrib><creatorcontrib>Leuermann, Jonas</creatorcontrib><creatorcontrib>Xu, Dan-Xia</creatorcontrib><creatorcontrib>Cheben, Pavel</creatorcontrib><creatorcontrib>Ortega-Moñux, Alejandro</creatorcontrib><creatorcontrib>Halir, Robert</creatorcontrib><creatorcontrib>Molina-Fernández, Íñigo</creatorcontrib><title>[INVITED] Subwavelength structures for silicon photonics biosensing</title><title>Optics and laser technology</title><description>•Subwavelength waveguides are very attractive for achieving high performance sensors.•The standard 220 nm silicon-thickness is not optimal for sensing purposes.•Coherent interferometric architectures enable unambiguous and low cost biosensors.•In the mid infrared, subwavelength structures show a strong potential for sensing.
Silicon photonic biosensors hold the potential for highly accurate, yet low cost point-of-care devices. Maximizing the sensitivity of the sensing chips while reducing the complexity and cost of the read-out system is pivotal to realize this potential. Here we present an extensive analysis, both from a practical and a theoretical perspective, of current biosensors, and analyze how subwavelength structures can be exploited to enhance their sensitivity. This study is not restricted just to the near-infrared band as we also determine the sensing capabilities of the suspended silicon waveguides with subwavelength metamaterial cladding working in the mid-infrared range. 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Gonzalo</au><au>Hadij-ElHouati, Abdelfettah</au><au>Sánchez-Postigo, Alejandro</au><au>Leuermann, Jonas</au><au>Xu, Dan-Xia</au><au>Cheben, Pavel</au><au>Ortega-Moñux, Alejandro</au><au>Halir, Robert</au><au>Molina-Fernández, Íñigo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>[INVITED] Subwavelength structures for silicon photonics biosensing</atitle><jtitle>Optics and laser technology</jtitle><date>2019-01</date><risdate>2019</risdate><volume>109</volume><spage>437</spage><epage>448</epage><pages>437-448</pages><issn>0030-3992</issn><eissn>1879-2545</eissn><abstract>•Subwavelength waveguides are very attractive for achieving high performance sensors.•The standard 220 nm silicon-thickness is not optimal for sensing purposes.•Coherent interferometric architectures enable unambiguous and low cost biosensors.•In the mid infrared, subwavelength structures show a strong potential for sensing.
Silicon photonic biosensors hold the potential for highly accurate, yet low cost point-of-care devices. Maximizing the sensitivity of the sensing chips while reducing the complexity and cost of the read-out system is pivotal to realize this potential. Here we present an extensive analysis, both from a practical and a theoretical perspective, of current biosensors, and analyze how subwavelength structures can be exploited to enhance their sensitivity. This study is not restricted just to the near-infrared band as we also determine the sensing capabilities of the suspended silicon waveguides with subwavelength metamaterial cladding working in the mid-infrared range. These waveguides have been recently proposed to cover the full transparency window of silicon (λ<∼8.5 μm), where the fingerprint spectral region of many molecules takes place and so a plethora of evanescent field absorption-based applications will be developed in the near future.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.optlastec.2018.07.071</doi><tpages>12</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Biosensors Cladding Coherent multi-port sensing architecture Metamaterials Optical properties Photonics Read out systems Sensitivity analysis Sensitivity enhancement Silicon Silicon photonics Subwavelength waveguides Waveguides |
| title | [INVITED] Subwavelength structures for silicon photonics biosensing |
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