In-fiber Mach-Zehnder interferometer based on multi-core microfiber for humidity and temperature sensing
A novel relative humidity (RH) sensor, based on an in-line microfiber interferometer (MFI), is proposed and demonstrated in an experiment. The microfiber interferometer is fabricated by tapering multi-core fiber down to the micrometer scale in diameter, and the coupling occurs between the center cor...
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| Veröffentlicht in: | Applied optics (2004) 2020-01, Vol.59 (3), p.756-763 |
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| creator | Cheng, Junni |
| description | A novel relative humidity (RH) sensor, based on an in-line microfiber interferometer (MFI), is proposed and demonstrated in an experiment. The microfiber interferometer is fabricated by tapering multi-core fiber down to the micrometer scale in diameter, and the coupling occurs between the center core mode and the multiple side core modes. To enhance the sensing performance, the microfiber sensor is fixed as U-shaped. The variation of RH is monitored by observing the wavelength shift of the transmission spectrum. The experimental results show that the sensor has a good linear response to RH. A thinner MFI diameter of 8.52 µm can offer a better RH sensitivity of 59.8 pm/(%RH) in the range of 35-95% RH. When temperature changes from 35°C to 85°C, the temperature sensitivity of the sensor is 4.2 pm/°C, which demonstrates that the sensor is insensitive to temperature. The simultaneous measurement of temperature and RH can be realized by cascading with fiber Bragg grating. The microfiber sensor is easy to fabricate and does not have any functional coating, which makes it widely used in accurate RH measuring. |
| doi_str_mv | 10.1364/AO.378696 |
| format | Article |
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The microfiber interferometer is fabricated by tapering multi-core fiber down to the micrometer scale in diameter, and the coupling occurs between the center core mode and the multiple side core modes. To enhance the sensing performance, the microfiber sensor is fixed as U-shaped. The variation of RH is monitored by observing the wavelength shift of the transmission spectrum. The experimental results show that the sensor has a good linear response to RH. A thinner MFI diameter of 8.52 µm can offer a better RH sensitivity of 59.8 pm/(%RH) in the range of 35-95% RH. When temperature changes from 35°C to 85°C, the temperature sensitivity of the sensor is 4.2 pm/°C, which demonstrates that the sensor is insensitive to temperature. The simultaneous measurement of temperature and RH can be realized by cascading with fiber Bragg grating. The microfiber sensor is easy to fabricate and does not have any functional coating, which makes it widely used in accurate RH measuring.</description><identifier>ISSN: 1559-128X</identifier><identifier>EISSN: 2155-3165</identifier><identifier>EISSN: 1539-4522</identifier><identifier>DOI: 10.1364/AO.378696</identifier><identifier>PMID: 32225206</identifier><language>eng</language><publisher>United States: Optical Society of America</publisher><subject>Bragg gratings ; Diameters ; Humidity ; Mach-Zehnder interferometers ; Microfibers ; Relative humidity ; Sensitivity ; Sensors ; Tapering</subject><ispartof>Applied optics (2004), 2020-01, Vol.59 (3), p.756-763</ispartof><rights>Copyright Optical Society of America Jan 20, 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c379t-4bd596bebc1ce968535aa8aa954d3bc988196ae9d65074a0bf98bc1b3380071f3</citedby><cites>FETCH-LOGICAL-c379t-4bd596bebc1ce968535aa8aa954d3bc988196ae9d65074a0bf98bc1b3380071f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,3245,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/32225206$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Cheng, Junni</creatorcontrib><title>In-fiber Mach-Zehnder interferometer based on multi-core microfiber for humidity and temperature sensing</title><title>Applied optics (2004)</title><addtitle>Appl Opt</addtitle><description>A novel relative humidity (RH) sensor, based on an in-line microfiber interferometer (MFI), is proposed and demonstrated in an experiment. 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The microfiber sensor is easy to fabricate and does not have any functional coating, which makes it widely used in accurate RH measuring.</description><subject>Bragg gratings</subject><subject>Diameters</subject><subject>Humidity</subject><subject>Mach-Zehnder interferometers</subject><subject>Microfibers</subject><subject>Relative humidity</subject><subject>Sensitivity</subject><subject>Sensors</subject><subject>Tapering</subject><issn>1559-128X</issn><issn>2155-3165</issn><issn>1539-4522</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNpd0E1LwzAYB_AgipvTg19ACl700JmXJk2OY_gymOyiIF5K0j61GWs6k_awb2-k6sFTnsAvf_L8EbokeE6YyO4WmznLpVDiCE0p4TxlRPBjNI2jSgmVbxN0FsIWY8YzlZ-iCaOUcorFFDUrl9bWgE-eddmk79C4Kl6s68HX4LsW4pAYHaBKOpe0w663adl5SFpb-m58Wnc-aYbWVrY_JNpVSQ_tHrzuh-gCuGDdxzk6qfUuwMXPOUOvD_cvy6d0vXlcLRfrtGS56tPMVFwJA6YkJSghOeNaS60VzypmSiUlUUKDqgTHeaaxqZWM1jAmMc5JzWboZszd--5zgNAXrQ0l7HbaQTeEgjKZSRpj80iv_9FtN3gXfxdVllGe55RGdTuquG4IHupi722r_aEguPiuv1hsirH-aK9-EgfTQvUnf_tmX69EgAc</recordid><startdate>20200120</startdate><enddate>20200120</enddate><creator>Cheng, Junni</creator><general>Optical Society of America</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>20200120</creationdate><title>In-fiber Mach-Zehnder interferometer based on multi-core microfiber for humidity and temperature sensing</title><author>Cheng, Junni</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c379t-4bd596bebc1ce968535aa8aa954d3bc988196ae9d65074a0bf98bc1b3380071f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Bragg gratings</topic><topic>Diameters</topic><topic>Humidity</topic><topic>Mach-Zehnder interferometers</topic><topic>Microfibers</topic><topic>Relative humidity</topic><topic>Sensitivity</topic><topic>Sensors</topic><topic>Tapering</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cheng, Junni</creatorcontrib><collection>PubMed</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><collection>MEDLINE - Academic</collection><jtitle>Applied optics (2004)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cheng, Junni</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>In-fiber Mach-Zehnder interferometer based on multi-core microfiber for humidity and temperature sensing</atitle><jtitle>Applied optics (2004)</jtitle><addtitle>Appl Opt</addtitle><date>2020-01-20</date><risdate>2020</risdate><volume>59</volume><issue>3</issue><spage>756</spage><epage>763</epage><pages>756-763</pages><issn>1559-128X</issn><eissn>2155-3165</eissn><eissn>1539-4522</eissn><abstract>A novel relative humidity (RH) sensor, based on an in-line microfiber interferometer (MFI), is proposed and demonstrated in an experiment. The microfiber interferometer is fabricated by tapering multi-core fiber down to the micrometer scale in diameter, and the coupling occurs between the center core mode and the multiple side core modes. To enhance the sensing performance, the microfiber sensor is fixed as U-shaped. The variation of RH is monitored by observing the wavelength shift of the transmission spectrum. The experimental results show that the sensor has a good linear response to RH. A thinner MFI diameter of 8.52 µm can offer a better RH sensitivity of 59.8 pm/(%RH) in the range of 35-95% RH. When temperature changes from 35°C to 85°C, the temperature sensitivity of the sensor is 4.2 pm/°C, which demonstrates that the sensor is insensitive to temperature. The simultaneous measurement of temperature and RH can be realized by cascading with fiber Bragg grating. The microfiber sensor is easy to fabricate and does not have any functional coating, which makes it widely used in accurate RH measuring.</abstract><cop>United States</cop><pub>Optical Society of America</pub><pmid>32225206</pmid><doi>10.1364/AO.378696</doi><tpages>8</tpages></addata></record> |
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| identifier | ISSN: 1559-128X |
| ispartof | Applied optics (2004), 2020-01, Vol.59 (3), p.756-763 |
| issn | 1559-128X 2155-3165 1539-4522 |
| language | eng |
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| source | Alma/SFX Local Collection; Optica Publishing Group Journals |
| subjects | Bragg gratings Diameters Humidity Mach-Zehnder interferometers Microfibers Relative humidity Sensitivity Sensors Tapering |
| title | In-fiber Mach-Zehnder interferometer based on multi-core microfiber for humidity and temperature sensing |
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