High-Order Harmonic-Frequency Cross-Correlation Algorithm for Absolute Cavity Length Interrogation of White-Light Fiber-Optic Fabry-Perot Sensors
A novel high-order harmonic-frequency cross-correlation algorithm is proposed for the cavity length interrogation of white-light fiber-optic Fabry-Perot sensors. The algorithm uses the minimum value of a high-order harmonic-frequency cross-correlation coefficient to determine the sensor cavity lengt...
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| Veröffentlicht in: | Journal of lightwave technology 2020-02, Vol.38 (4), p.953-960 |
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| container_end_page | 960 |
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| container_issue | 4 |
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| container_title | Journal of lightwave technology |
| container_volume | 38 |
| creator | Chen, Haibin Liu, Jie Zhang, Xiongxing Wang, Wei Ma, Zhibo Lv, Wentao Guo, Zilong |
| description | A novel high-order harmonic-frequency cross-correlation algorithm is proposed for the cavity length interrogation of white-light fiber-optic Fabry-Perot sensors. The algorithm uses the minimum value of a high-order harmonic-frequency cross-correlation coefficient to determine the sensor cavity length by fundamental cross correlation. This eliminates ambiguity in identifying the main peak of the fundamental cross-correlation coefficient, especially when the white-light source bandwidth is insufficient. The proposed algorithm was verified through simulation and experiment using a fiber-optic FP sensor with a cavity length of 79.175 μm. The reflection spectrum was obtained under illumination by an amplified spontaneous emission light source with a 3-dB bandwidth of 46 nm. The interrogation resolution of the algorithm was found to exceed 107.67 pm. |
| doi_str_mv | 10.1109/JLT.2019.2948214 |
| format | Article |
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The algorithm uses the minimum value of a high-order harmonic-frequency cross-correlation coefficient to determine the sensor cavity length by fundamental cross correlation. This eliminates ambiguity in identifying the main peak of the fundamental cross-correlation coefficient, especially when the white-light source bandwidth is insufficient. The proposed algorithm was verified through simulation and experiment using a fiber-optic FP sensor with a cavity length of 79.175 μm. The reflection spectrum was obtained under illumination by an amplified spontaneous emission light source with a 3-dB bandwidth of 46 nm. The interrogation resolution of the algorithm was found to exceed 107.67 pm.</description><identifier>ISSN: 0733-8724</identifier><identifier>EISSN: 1558-2213</identifier><identifier>DOI: 10.1109/JLT.2019.2948214</identifier><identifier>CODEN: JLTEDG</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Algorithms ; Cavity length interrogation ; Cavity resonators ; Computer simulation ; correlation algo-rithm ; Correlation coefficients ; Cross correlation ; Fabry–Perot cavity ; Fiber optics ; fiber-optic sensor ; Interrogation ; Light sources ; Optical fiber sensors ; Optical fiber theory ; Optical fibers ; Questioning ; Reflection ; Sensors ; Spontaneous emission ; White light</subject><ispartof>Journal of lightwave technology, 2020-02, Vol.38 (4), p.953-960</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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The algorithm uses the minimum value of a high-order harmonic-frequency cross-correlation coefficient to determine the sensor cavity length by fundamental cross correlation. This eliminates ambiguity in identifying the main peak of the fundamental cross-correlation coefficient, especially when the white-light source bandwidth is insufficient. The proposed algorithm was verified through simulation and experiment using a fiber-optic FP sensor with a cavity length of 79.175 μm. The reflection spectrum was obtained under illumination by an amplified spontaneous emission light source with a 3-dB bandwidth of 46 nm. The interrogation resolution of the algorithm was found to exceed 107.67 pm.</description><subject>Algorithms</subject><subject>Cavity length interrogation</subject><subject>Cavity resonators</subject><subject>Computer simulation</subject><subject>correlation algo-rithm</subject><subject>Correlation coefficients</subject><subject>Cross correlation</subject><subject>Fabry–Perot cavity</subject><subject>Fiber optics</subject><subject>fiber-optic sensor</subject><subject>Interrogation</subject><subject>Light sources</subject><subject>Optical fiber sensors</subject><subject>Optical fiber theory</subject><subject>Optical fibers</subject><subject>Questioning</subject><subject>Reflection</subject><subject>Sensors</subject><subject>Spontaneous emission</subject><subject>White light</subject><issn>0733-8724</issn><issn>1558-2213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNo9kE2L2zAURUVpoWnafWE2gq6V6suxvAymmaQYUmhKl0ZWnhKFxMo8KQP-GfOPxyHDrN7m3He5h5Dvgs-E4NXP3812JrmoZrLSRgr9gUxEURgmpVAfyYSXSjFTSv2ZfEnpyLnQ2pQT8rIK-wPb4A6QriyeYx8cWyI8XaF3A60xpsTqiAgnm0Ps6eK0jxjy4Ux9RLroUjxdM9DaPoc80Ab6fT7QdZ8BMe7vkejp_0PIwJqxK9Nl6ADZ5pKDo0vb4cD-AMZM_0KfIqav5JO3pwTf3u6U_Fv-2tYr1mwe1_WiYU5WIjM_jplbVWrptTSV78rKFkpz7gV4UexAlsYpy8EpabUsra2k017sOtM5Jbyakh_3vxeM49qU22O8Yj9WtlIVei5EpdVI8TvlbiYQfHvBcLY4tIK3N_HtKL69iW_fxI-Rh3skAMA7bkw5n6tCvQIL3oEV</recordid><startdate>20200215</startdate><enddate>20200215</enddate><creator>Chen, Haibin</creator><creator>Liu, Jie</creator><creator>Zhang, Xiongxing</creator><creator>Wang, Wei</creator><creator>Ma, Zhibo</creator><creator>Lv, Wentao</creator><creator>Guo, Zilong</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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The algorithm uses the minimum value of a high-order harmonic-frequency cross-correlation coefficient to determine the sensor cavity length by fundamental cross correlation. This eliminates ambiguity in identifying the main peak of the fundamental cross-correlation coefficient, especially when the white-light source bandwidth is insufficient. The proposed algorithm was verified through simulation and experiment using a fiber-optic FP sensor with a cavity length of 79.175 μm. The reflection spectrum was obtained under illumination by an amplified spontaneous emission light source with a 3-dB bandwidth of 46 nm. The interrogation resolution of the algorithm was found to exceed 107.67 pm.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/JLT.2019.2948214</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0002-8501-8036</orcidid><orcidid>https://orcid.org/0000-0002-2978-7359</orcidid></addata></record> |
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| source | IEEE Electronic Library (IEL) |
| subjects | Algorithms Cavity length interrogation Cavity resonators Computer simulation correlation algo-rithm Correlation coefficients Cross correlation Fabry–Perot cavity Fiber optics fiber-optic sensor Interrogation Light sources Optical fiber sensors Optical fiber theory Optical fibers Questioning Reflection Sensors Spontaneous emission White light |
| title | High-Order Harmonic-Frequency Cross-Correlation Algorithm for Absolute Cavity Length Interrogation of White-Light Fiber-Optic Fabry-Perot Sensors |
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