Optical Beam Steering Using Vertically Actuated MEMS Grating Coupler
This work demonstrates a novel MEMS tunable beam divider with vertical actuation and internally positioned grating. The internal placement of the grating within the waveguide core increases the coupling and the ability to change the effective index. The tunable grating coupler has an angular tuning...
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| Veröffentlicht in: | Journal of lightwave technology 2023-12, Vol.41 (23), p.7309-7315 |
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| container_title | Journal of lightwave technology |
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| creator | K. N., Jishnu Sadasivan, Viswas |
| description | This work demonstrates a novel MEMS tunable beam divider with vertical actuation and internally positioned grating. The internal placement of the grating within the waveguide core increases the coupling and the ability to change the effective index. The tunable grating coupler has an angular tuning range of ∼7° at 1550 nm wavelength with an actuation voltage of 5 V. It can provide >−4.7 dB coupling to the attached photodiode. The grating coupler has a beam width of ∼0.95° for a 100 μm long grating, and it reduces to ∼0.55° for a 300 μm long grating. Visible and near-infrared transparent materials used in the design allow its integration on the front side of a solar cell for simultaneous energy generation and communication. Keeping the tunable grating coupler on the back side of the solar panel will eliminate the estimated 15% reduction in the solar cell efficiency caused due to front-side integration. This system can co-exist with other radio-based communication transceivers and provide additional bandwidth, redundancy, or LiDAR imaging capability, without adding significant weight or consuming more area. |
| doi_str_mv | 10.1109/JLT.2023.3326353 |
| format | Article |
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N., Jishnu ; Sadasivan, Viswas</creator><creatorcontrib>K. N., Jishnu ; Sadasivan, Viswas</creatorcontrib><description>This work demonstrates a novel MEMS tunable beam divider with vertical actuation and internally positioned grating. The internal placement of the grating within the waveguide core increases the coupling and the ability to change the effective index. The tunable grating coupler has an angular tuning range of ∼7° at 1550 nm wavelength with an actuation voltage of 5 V. It can provide >−4.7 dB coupling to the attached photodiode. The grating coupler has a beam width of ∼0.95° for a 100 μm long grating, and it reduces to ∼0.55° for a 300 μm long grating. Visible and near-infrared transparent materials used in the design allow its integration on the front side of a solar cell for simultaneous energy generation and communication. Keeping the tunable grating coupler on the back side of the solar panel will eliminate the estimated 15% reduction in the solar cell efficiency caused due to front-side integration. This system can co-exist with other radio-based communication transceivers and provide additional bandwidth, redundancy, or LiDAR imaging capability, without adding significant weight or consuming more area.</description><identifier>ISSN: 0733-8724</identifier><identifier>EISSN: 1558-2213</identifier><identifier>DOI: 10.1109/JLT.2023.3326353</identifier><identifier>CODEN: JLTEDG</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Actuation ; Beam steering ; Couplers ; Coupling ; Gratings ; microelectromechanical systems ; Micromechanical devices ; Optical receivers ; Optical refraction ; Optical variables control ; Photodiodes ; Photovoltaic cells ; Redundancy ; Solar cells ; Vertical orientation ; Waveguides</subject><ispartof>Journal of lightwave technology, 2023-12, Vol.41 (23), p.7309-7315</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2023</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c245t-50c3c1c17adcb52c4d9edde8c41f39b532e7defc6437564600c8b5e2b4e5532f3</cites><orcidid>0000-0002-5335-0915 ; 0009-0006-5226-4544</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/10288396$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/10288396$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>K. N., Jishnu</creatorcontrib><creatorcontrib>Sadasivan, Viswas</creatorcontrib><title>Optical Beam Steering Using Vertically Actuated MEMS Grating Coupler</title><title>Journal of lightwave technology</title><addtitle>JLT</addtitle><description>This work demonstrates a novel MEMS tunable beam divider with vertical actuation and internally positioned grating. The internal placement of the grating within the waveguide core increases the coupling and the ability to change the effective index. The tunable grating coupler has an angular tuning range of ∼7° at 1550 nm wavelength with an actuation voltage of 5 V. It can provide >−4.7 dB coupling to the attached photodiode. The grating coupler has a beam width of ∼0.95° for a 100 μm long grating, and it reduces to ∼0.55° for a 300 μm long grating. Visible and near-infrared transparent materials used in the design allow its integration on the front side of a solar cell for simultaneous energy generation and communication. Keeping the tunable grating coupler on the back side of the solar panel will eliminate the estimated 15% reduction in the solar cell efficiency caused due to front-side integration. This system can co-exist with other radio-based communication transceivers and provide additional bandwidth, redundancy, or LiDAR imaging capability, without adding significant weight or consuming more area.</description><subject>Actuation</subject><subject>Beam steering</subject><subject>Couplers</subject><subject>Coupling</subject><subject>Gratings</subject><subject>microelectromechanical systems</subject><subject>Micromechanical devices</subject><subject>Optical receivers</subject><subject>Optical refraction</subject><subject>Optical variables control</subject><subject>Photodiodes</subject><subject>Photovoltaic cells</subject><subject>Redundancy</subject><subject>Solar cells</subject><subject>Vertical orientation</subject><subject>Waveguides</subject><issn>0733-8724</issn><issn>1558-2213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkDFPwzAQRi0EEqWwMzBEYk6xfXbsjKWUAmrVoS2rlTgXlCptgu0M_fcklIHlbvjedyc9Qu4ZnTBG06eP5XbCKYcJAE9AwgUZMSl1zDmDSzKiCiDWiotrcuP9nlImhFYj8rJuQ2WzOnrG7BBtAqKrjl_Rzg_zE91vWJ-iqQ1dFrCIVvPVJlq4LAzArOnaGt0tuSqz2uPd3x6T3et8O3uLl-vF-2y6jC0XMsSSWrDMMpUVNpfciiLFokBtBSshzSVwVAWWNhGgZCISSq3OJfJcoOzDEsbk8Xy3dc13hz6YfdO5Y__ScJ1KraigtKfombKu8d5haVpXHTJ3MoyawZXpXZnBlflz1VcezpUKEf_hXGtIE_gBhb1kUw</recordid><startdate>20231201</startdate><enddate>20231201</enddate><creator>K. N., Jishnu</creator><creator>Sadasivan, Viswas</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-5335-0915</orcidid><orcidid>https://orcid.org/0009-0006-5226-4544</orcidid></search><sort><creationdate>20231201</creationdate><title>Optical Beam Steering Using Vertically Actuated MEMS Grating Coupler</title><author>K. N., Jishnu ; Sadasivan, Viswas</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c245t-50c3c1c17adcb52c4d9edde8c41f39b532e7defc6437564600c8b5e2b4e5532f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Actuation</topic><topic>Beam steering</topic><topic>Couplers</topic><topic>Coupling</topic><topic>Gratings</topic><topic>microelectromechanical systems</topic><topic>Micromechanical devices</topic><topic>Optical receivers</topic><topic>Optical refraction</topic><topic>Optical variables control</topic><topic>Photodiodes</topic><topic>Photovoltaic cells</topic><topic>Redundancy</topic><topic>Solar cells</topic><topic>Vertical orientation</topic><topic>Waveguides</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>K. N., Jishnu</creatorcontrib><creatorcontrib>Sadasivan, Viswas</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of lightwave technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>K. N., Jishnu</au><au>Sadasivan, Viswas</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optical Beam Steering Using Vertically Actuated MEMS Grating Coupler</atitle><jtitle>Journal of lightwave technology</jtitle><stitle>JLT</stitle><date>2023-12-01</date><risdate>2023</risdate><volume>41</volume><issue>23</issue><spage>7309</spage><epage>7315</epage><pages>7309-7315</pages><issn>0733-8724</issn><eissn>1558-2213</eissn><coden>JLTEDG</coden><abstract>This work demonstrates a novel MEMS tunable beam divider with vertical actuation and internally positioned grating. The internal placement of the grating within the waveguide core increases the coupling and the ability to change the effective index. The tunable grating coupler has an angular tuning range of ∼7° at 1550 nm wavelength with an actuation voltage of 5 V. It can provide >−4.7 dB coupling to the attached photodiode. The grating coupler has a beam width of ∼0.95° for a 100 μm long grating, and it reduces to ∼0.55° for a 300 μm long grating. Visible and near-infrared transparent materials used in the design allow its integration on the front side of a solar cell for simultaneous energy generation and communication. Keeping the tunable grating coupler on the back side of the solar panel will eliminate the estimated 15% reduction in the solar cell efficiency caused due to front-side integration. This system can co-exist with other radio-based communication transceivers and provide additional bandwidth, redundancy, or LiDAR imaging capability, without adding significant weight or consuming more area.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/JLT.2023.3326353</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-5335-0915</orcidid><orcidid>https://orcid.org/0009-0006-5226-4544</orcidid></addata></record> |
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| ispartof | Journal of lightwave technology, 2023-12, Vol.41 (23), p.7309-7315 |
| issn | 0733-8724 1558-2213 |
| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Actuation Beam steering Couplers Coupling Gratings microelectromechanical systems Micromechanical devices Optical receivers Optical refraction Optical variables control Photodiodes Photovoltaic cells Redundancy Solar cells Vertical orientation Waveguides |
| title | Optical Beam Steering Using Vertically Actuated MEMS Grating Coupler |
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