Hollow Fiber Coupler Sensor
We present a bi-conical optical directional coupler composed of solid and hollow core fibers. Through an evanescent wave coupling mechanism, the detection of liquid refractive index and its temperature are demonstrated. The experimental results illustrated that the sensor offers a sensitivity of <...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/19/4/806 |
| _version_ | 1811277995613093888 |
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| author | Nithin Kuruba Tao Lu |
| author_facet | Nithin Kuruba Tao Lu |
| author_sort | Nithin Kuruba |
| collection | DOAJ |
| description | We present a bi-conical optical directional coupler composed of solid and hollow core fibers. Through an evanescent wave coupling mechanism, the detection of liquid refractive index and its temperature are demonstrated. The experimental results illustrated that the sensor offers a sensitivity of <inline-formula> <math display="inline"> <semantics> <mrow> <mn>4.03</mn> <mo>±</mo> <mn>0.50</mn> </mrow> </semantics> </math> </inline-formula> volts per refractive index units (V/RIU) for refractive indices ranging from <inline-formula> <math display="inline"> <semantics> <mrow> <mn>1.331</mn> <mo>±</mo> <mn>0.003</mn> </mrow> </semantics> </math> </inline-formula> to <inline-formula> <math display="inline"> <semantics> <mrow> <mn>1.403</mn> <mo>±</mo> <mn>0.003</mn> </mrow> </semantics> </math> </inline-formula> with a resolution of <inline-formula> <math display="inline"> <semantics> <mrow> <mn>3.5</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow> <mo>−</mo> <mn>3</mn> </mrow> </msup> </mrow> </semantics> </math> </inline-formula> refractive index units (RIU). |
| first_indexed | 2024-04-13T00:26:49Z |
| format | Article |
| id | doaj.art-865c31a17e9b42ad8632193ce09ed82c |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T00:26:49Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-865c31a17e9b42ad8632193ce09ed82c2022-12-22T03:10:35ZengMDPI AGSensors1424-82202019-02-0119480610.3390/s19040806s19040806Hollow Fiber Coupler SensorNithin Kuruba0Tao Lu1Department of Electrical and Computer Engineering, University of Victoria, Victoria, BC V8P 5C2, CanadaDepartment of Electrical and Computer Engineering, University of Victoria, Victoria, BC V8P 5C2, CanadaWe present a bi-conical optical directional coupler composed of solid and hollow core fibers. Through an evanescent wave coupling mechanism, the detection of liquid refractive index and its temperature are demonstrated. The experimental results illustrated that the sensor offers a sensitivity of <inline-formula> <math display="inline"> <semantics> <mrow> <mn>4.03</mn> <mo>±</mo> <mn>0.50</mn> </mrow> </semantics> </math> </inline-formula> volts per refractive index units (V/RIU) for refractive indices ranging from <inline-formula> <math display="inline"> <semantics> <mrow> <mn>1.331</mn> <mo>±</mo> <mn>0.003</mn> </mrow> </semantics> </math> </inline-formula> to <inline-formula> <math display="inline"> <semantics> <mrow> <mn>1.403</mn> <mo>±</mo> <mn>0.003</mn> </mrow> </semantics> </math> </inline-formula> with a resolution of <inline-formula> <math display="inline"> <semantics> <mrow> <mn>3.5</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow> <mo>−</mo> <mn>3</mn> </mrow> </msup> </mrow> </semantics> </math> </inline-formula> refractive index units (RIU).https://www.mdpi.com/1424-8220/19/4/806hollow core fiberdirectional couplerbiosensor |
| spellingShingle | Nithin Kuruba Tao Lu Hollow Fiber Coupler Sensor Sensors hollow core fiber directional coupler biosensor |
| title | Hollow Fiber Coupler Sensor |
| title_full | Hollow Fiber Coupler Sensor |
| title_fullStr | Hollow Fiber Coupler Sensor |
| title_full_unstemmed | Hollow Fiber Coupler Sensor |
| title_short | Hollow Fiber Coupler Sensor |
| title_sort | hollow fiber coupler sensor |
| topic | hollow core fiber directional coupler biosensor |
| url | https://www.mdpi.com/1424-8220/19/4/806 |
| work_keys_str_mv | AT nithinkuruba hollowfibercouplersensor AT taolu hollowfibercouplersensor |