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Fiber modal Michelson interferometers with coherence addressing and heterodyne interrogation
A long-period-grating-based fiber optic Michelson modal interferometer with coherence addressing and heterodyne interrogation is studied as a sensing structure for measuring environmental refractive index, temperature, and liquid level. The effects of several system parameters on the measurements ar...
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| Published in: | Optical Engineering 2008-04, Vol.47 (4), p.044401-044407 |
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| Main Authors: | , , , , , , |
| Format: | Article |
| Language: | English |
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| cited_by | cdi_FETCH-LOGICAL-c304t-45879d9bbefeaf46a1e0a7ebeee54aac74bf4938e0ed6fe88aca89e65c3dca23 |
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| cites | cdi_FETCH-LOGICAL-c304t-45879d9bbefeaf46a1e0a7ebeee54aac74bf4938e0ed6fe88aca89e65c3dca23 |
| container_end_page | 044407 |
| container_issue | 4 |
| container_start_page | 044401 |
| container_title | Optical Engineering |
| container_volume | 47 |
| creator | Caldas, Paulo Jorge, Pedro A. S Arau´jo, F. M Ferreira, Lui´s A Marques, Manuel B Rego, Gaspar Santos, Jose´ Lui´s |
| description | A long-period-grating-based fiber optic Michelson modal interferometer with coherence addressing and heterodyne interrogation is studied as a sensing structure for measuring environmental refractive index, temperature, and liquid level. The effects of several system parameters on the measurements are investigated. Experimental results show that the sensitivity to the external refractive index increases with the order of cladding mode and with a reduction of the fiber diameter. The decrease of the fiber diameter from
down to
enhances the sensitivity to the external index by a factor of 2.7. It is also shown that the use of a silica-core fiber increases the sensitivity to the external index by a factor of 1.4 and reduces the thermal sensitivity by a factor of 2.5 compared to a standard fiber. |
| doi_str_mv | 10.1117/1.2903089 |
| format | article |
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down to
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down to
enhances the sensitivity to the external index by a factor of 2.7. It is also shown that the use of a silica-core fiber increases the sensitivity to the external index by a factor of 1.4 and reduces the thermal sensitivity by a factor of 2.5 compared to a standard fiber.</description><subject>Coherence</subject><subject>coherence addressing</subject><subject>Fiber optics</subject><subject>Fibers</subject><subject>heterodyne interrogation</subject><subject>Interferometers</subject><subject>Interrogation</subject><subject>long-period grating</subject><subject>modal interferometer</subject><subject>Optical fibers</subject><subject>Refractive index</subject><subject>Refractivity</subject><issn>0091-3286</issn><issn>1560-2303</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNo9kFFLwzAUhYMoOKcP_oO8iQ-dN03aJo9jbFOYTGSPQknT2zXSNTPpkP17u3X4dM7Ddy7cj5BHBhPGWPbCJrECDlJdkRFLUohiDvyajAAUi3gs01tyF8I3AMRKyhH5WtgCPd25Ujf03Zoam-BaatsOfYXe7bAvgf7arqbG1eixNUh1WXoMwbZbqtuS1ifIlccWh6F3W91Z196Tm0o3AR8uOSabxXwze41W6-XbbLqKDAfRRSKRmSpVUWCFuhKpZgg6wwIRE6G1yURRCcUlApZphVJqo6XCNDG8NDrmY_I0nN1793PA0OU7Gww2jW7RHUIupRL9vynvyeeBNN6F4LHK997utD_mDPKTv5zlF389Gw9s2Fv859Yf8-X0s9cHIoNzgBAC2Lkz_gfwe3Ol</recordid><startdate>20080401</startdate><enddate>20080401</enddate><creator>Caldas, Paulo</creator><creator>Jorge, Pedro A. S</creator><creator>Arau´jo, F. M</creator><creator>Ferreira, Lui´s A</creator><creator>Marques, Manuel B</creator><creator>Rego, Gaspar</creator><creator>Santos, Jose´ Lui´s</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>L7M</scope></search><sort><creationdate>20080401</creationdate><title>Fiber modal Michelson interferometers with coherence addressing and heterodyne interrogation</title><author>Caldas, Paulo ; Jorge, Pedro A. S ; Arau´jo, F. M ; Ferreira, Lui´s A ; Marques, Manuel B ; Rego, Gaspar ; Santos, Jose´ Lui´s</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c304t-45879d9bbefeaf46a1e0a7ebeee54aac74bf4938e0ed6fe88aca89e65c3dca23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Coherence</topic><topic>coherence addressing</topic><topic>Fiber optics</topic><topic>Fibers</topic><topic>heterodyne interrogation</topic><topic>Interferometers</topic><topic>Interrogation</topic><topic>long-period grating</topic><topic>modal interferometer</topic><topic>Optical fibers</topic><topic>Refractive index</topic><topic>Refractivity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Caldas, Paulo</creatorcontrib><creatorcontrib>Jorge, Pedro A. S</creatorcontrib><creatorcontrib>Arau´jo, F. M</creatorcontrib><creatorcontrib>Ferreira, Lui´s A</creatorcontrib><creatorcontrib>Marques, Manuel B</creatorcontrib><creatorcontrib>Rego, Gaspar</creatorcontrib><creatorcontrib>Santos, Jose´ Lui´s</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Optical Engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Caldas, Paulo</au><au>Jorge, Pedro A. S</au><au>Arau´jo, F. M</au><au>Ferreira, Lui´s A</au><au>Marques, Manuel B</au><au>Rego, Gaspar</au><au>Santos, Jose´ Lui´s</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fiber modal Michelson interferometers with coherence addressing and heterodyne interrogation</atitle><jtitle>Optical Engineering</jtitle><date>2008-04-01</date><risdate>2008</risdate><volume>47</volume><issue>4</issue><spage>044401</spage><epage>044407</epage><pages>044401-044407</pages><issn>0091-3286</issn><eissn>1560-2303</eissn><coden>OPEGAR</coden><abstract>A long-period-grating-based fiber optic Michelson modal interferometer with coherence addressing and heterodyne interrogation is studied as a sensing structure for measuring environmental refractive index, temperature, and liquid level. The effects of several system parameters on the measurements are investigated. Experimental results show that the sensitivity to the external refractive index increases with the order of cladding mode and with a reduction of the fiber diameter. The decrease of the fiber diameter from
down to
enhances the sensitivity to the external index by a factor of 2.7. It is also shown that the use of a silica-core fiber increases the sensitivity to the external index by a factor of 1.4 and reduces the thermal sensitivity by a factor of 2.5 compared to a standard fiber.</abstract><doi>10.1117/1.2903089</doi><tpages>7</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0091-3286 |
| ispartof | Optical Engineering, 2008-04, Vol.47 (4), p.044401-044407 |
| issn | 0091-3286 1560-2303 |
| language | eng |
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| source | SPIE Digital Library (Journals) |
| subjects | Coherence coherence addressing Fiber optics Fibers heterodyne interrogation Interferometers Interrogation long-period grating modal interferometer Optical fibers Refractive index Refractivity |
| title | Fiber modal Michelson interferometers with coherence addressing and heterodyne interrogation |
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