An ultrasonic fiber-optic hydrophone incorporating a push-pull transducer in a Sagnac interferometer
A theoretical and experimental analysis of a push-pull acoustic transducer incorporated in a Sagnac interferometer is presented. The transducer is optimized for detection of ultrasonic signals in the frequency range 0.4-1.5 MHz. Two different configurations are investigated. In one, the sensing fibe...
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| Veröffentlicht in: | Journal of lightwave technology 1994-09, Vol.12 (9), p.1696-1700 |
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| container_title | Journal of lightwave technology |
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| creator | Knudsen, S. Blotekjaer, K. |
| description | A theoretical and experimental analysis of a push-pull acoustic transducer incorporated in a Sagnac interferometer is presented. The transducer is optimized for detection of ultrasonic signals in the frequency range 0.4-1.5 MHz. Two different configurations are investigated. In one, the sensing fiber forming the transducer constitutes the total loop length, and in the second an additional delay coil is included in the middle section of the Sagnac loop. In the latter we demonstrate experimentally noise-equivalent pressures of 36-43 dB re. 1 /spl mu/Pa/Hz/sup 1/2/ in the frequency range 0.4-1.0 MHz. An approximate theoretical model is presented, and we obtain reasonable agreement between theory and experiment for both the frequency-dependent noise equivalent pressure and the directional responsivity of this push-pull acoustic fiber-optic sensor.< > |
| doi_str_mv | 10.1109/50.320954 |
| format | Article |
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The transducer is optimized for detection of ultrasonic signals in the frequency range 0.4-1.5 MHz. Two different configurations are investigated. In one, the sensing fiber forming the transducer constitutes the total loop length, and in the second an additional delay coil is included in the middle section of the Sagnac loop. In the latter we demonstrate experimentally noise-equivalent pressures of 36-43 dB re. 1 /spl mu/Pa/Hz/sup 1/2/ in the frequency range 0.4-1.0 MHz. An approximate theoretical model is presented, and we obtain reasonable agreement between theory and experiment for both the frequency-dependent noise equivalent pressure and the directional responsivity of this push-pull acoustic fiber-optic sensor.< ></description><identifier>ISSN: 0733-8724</identifier><identifier>EISSN: 1558-2213</identifier><identifier>DOI: 10.1109/50.320954</identifier><identifier>CODEN: JLTEDG</identifier><language>eng</language><publisher>IEEE</publisher><subject>Acoustic noise ; Acoustic signal detection ; Acoustic transducers ; Added delay ; Coils ; Frequency ; Sagnac interferometers ; Signal detection ; Sonar equipment ; Ultrasonic transducers</subject><ispartof>Journal of lightwave technology, 1994-09, Vol.12 (9), p.1696-1700</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c223t-c23541388d1815ef2c41d3763d8af4f601e758d0b95d65b39841b6c112fda04c3</citedby><cites>FETCH-LOGICAL-c223t-c23541388d1815ef2c41d3763d8af4f601e758d0b95d65b39841b6c112fda04c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/320954$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,777,781,793,27905,27906,54739</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/320954$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc></links><search><creatorcontrib>Knudsen, S.</creatorcontrib><creatorcontrib>Blotekjaer, K.</creatorcontrib><title>An ultrasonic fiber-optic hydrophone incorporating a push-pull transducer in a Sagnac interferometer</title><title>Journal of lightwave technology</title><addtitle>JLT</addtitle><description>A theoretical and experimental analysis of a push-pull acoustic transducer incorporated in a Sagnac interferometer is presented. The transducer is optimized for detection of ultrasonic signals in the frequency range 0.4-1.5 MHz. Two different configurations are investigated. In one, the sensing fiber forming the transducer constitutes the total loop length, and in the second an additional delay coil is included in the middle section of the Sagnac loop. In the latter we demonstrate experimentally noise-equivalent pressures of 36-43 dB re. 1 /spl mu/Pa/Hz/sup 1/2/ in the frequency range 0.4-1.0 MHz. An approximate theoretical model is presented, and we obtain reasonable agreement between theory and experiment for both the frequency-dependent noise equivalent pressure and the directional responsivity of this push-pull acoustic fiber-optic sensor.< ></description><subject>Acoustic noise</subject><subject>Acoustic signal detection</subject><subject>Acoustic transducers</subject><subject>Added delay</subject><subject>Coils</subject><subject>Frequency</subject><subject>Sagnac interferometers</subject><subject>Signal detection</subject><subject>Sonar equipment</subject><subject>Ultrasonic transducers</subject><issn>0733-8724</issn><issn>1558-2213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><recordid>eNqFkDtPwzAURi0EEuUxsDJlQmJI8TNxxqriJVViAGbLsa_boNQOdjL032OUipXl3iN9597hQ-iG4CUhuHkQeMkobgQ_QQsihCwpJewULXDNWClrys_RRUpfGBPOZb1AduWLqR-jTsF3pnBdC7EMw5h5d7AxDLvgoei8CXEIUY-d3xa6GKa0K4ep74t86ZOdDMQs5eRdb702mUeIDmLYQ4YrdOZ0n-D6uC_R59Pjx_ql3Lw9v65Xm9JQysY8meCESWmJJAIcNZxYVlfMSu24qzCBWkiL20bYSrSskZy0lSGEOqsxN-wS3c1_hxi-J0ij2nfJQN9rD2FKikpOcW7pf7HiVSMpz-L9LJoYUorg1BC7vY4HRbD6LVwJrObCs3s7ux0A_HnH8AeMCXus</recordid><startdate>19940901</startdate><enddate>19940901</enddate><creator>Knudsen, S.</creator><creator>Blotekjaer, K.</creator><general>IEEE</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7SP</scope></search><sort><creationdate>19940901</creationdate><title>An ultrasonic fiber-optic hydrophone incorporating a push-pull transducer in a Sagnac interferometer</title><author>Knudsen, S. ; Blotekjaer, K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c223t-c23541388d1815ef2c41d3763d8af4f601e758d0b95d65b39841b6c112fda04c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Acoustic noise</topic><topic>Acoustic signal detection</topic><topic>Acoustic transducers</topic><topic>Added delay</topic><topic>Coils</topic><topic>Frequency</topic><topic>Sagnac interferometers</topic><topic>Signal detection</topic><topic>Sonar equipment</topic><topic>Ultrasonic transducers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Knudsen, S.</creatorcontrib><creatorcontrib>Blotekjaer, K.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Electronics & Communications Abstracts</collection><jtitle>Journal of lightwave technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Knudsen, S.</au><au>Blotekjaer, K.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>An ultrasonic fiber-optic hydrophone incorporating a push-pull transducer in a Sagnac interferometer</atitle><jtitle>Journal of lightwave technology</jtitle><stitle>JLT</stitle><date>1994-09-01</date><risdate>1994</risdate><volume>12</volume><issue>9</issue><spage>1696</spage><epage>1700</epage><pages>1696-1700</pages><issn>0733-8724</issn><eissn>1558-2213</eissn><coden>JLTEDG</coden><abstract>A theoretical and experimental analysis of a push-pull acoustic transducer incorporated in a Sagnac interferometer is presented. The transducer is optimized for detection of ultrasonic signals in the frequency range 0.4-1.5 MHz. Two different configurations are investigated. In one, the sensing fiber forming the transducer constitutes the total loop length, and in the second an additional delay coil is included in the middle section of the Sagnac loop. In the latter we demonstrate experimentally noise-equivalent pressures of 36-43 dB re. 1 /spl mu/Pa/Hz/sup 1/2/ in the frequency range 0.4-1.0 MHz. An approximate theoretical model is presented, and we obtain reasonable agreement between theory and experiment for both the frequency-dependent noise equivalent pressure and the directional responsivity of this push-pull acoustic fiber-optic sensor.< ></abstract><pub>IEEE</pub><doi>10.1109/50.320954</doi><tpages>5</tpages></addata></record> |
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| ispartof | Journal of lightwave technology, 1994-09, Vol.12 (9), p.1696-1700 |
| issn | 0733-8724 1558-2213 |
| language | eng |
| recordid | cdi_ieee_primary_320954 |
| source | IEEE Electronic Library (IEL) |
| subjects | Acoustic noise Acoustic signal detection Acoustic transducers Added delay Coils Frequency Sagnac interferometers Signal detection Sonar equipment Ultrasonic transducers |
| title | An ultrasonic fiber-optic hydrophone incorporating a push-pull transducer in a Sagnac interferometer |
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