File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Frequency-shifted Mach-Zehnder interferometer for locating multiple weak reflections along a fiber link

TitleFrequency-shifted Mach-Zehnder interferometer for locating multiple weak reflections along a fiber link
Authors
KeywordsDiscrete fourier transforms (DFTs)
Optical interferometry
Phase-locked amplifiers
Optical fiber measurements
Issue Date2006
Citation
IEEE Photonics Technology Letters, 2006, v. 18, n. 1, p. 295-297 How to Cite?
AbstractWe propose and demonstrate a novel technique for measuring fiber lengths and locating multiple weak reflections along the fiber using a low-cost continuous wave source, a folded Mach-Zehnder interferometer (MZI), and a frequency shifter. By sweeping the frequency of the shifter, which is located in one path of the MZI, the optical length of the test fiber can be determined precisely from the interference pattern constructed by the reflected signals from the fiber end. Experimentally, for fibers shorter than 10 km, the standard deviations are less than 1 mm. Furthermore, by incorporating lock-in detection and fast Fourier transform techniques, both the locations and the reflectance of multiple reflection sites along one fiber can be resolved with a spatial resolution of about 5 m and a sensitivity better than - 67 dB. This could be a powerful interrogating technique for optical fiber sensor arrays. © 2005 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/285596
ISSN
2020 Impact Factor: 2.468
2020 SCImago Journal Rankings: 0.810
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorQi, Bing-
dc.contributor.authorQian, Li-
dc.contributor.authorTausz, Andrew-
dc.contributor.authorLo, Hoi Kwong-
dc.date.accessioned2020-08-18T04:56:09Z-
dc.date.available2020-08-18T04:56:09Z-
dc.date.issued2006-
dc.identifier.citationIEEE Photonics Technology Letters, 2006, v. 18, n. 1, p. 295-297-
dc.identifier.issn1041-1135-
dc.identifier.urihttp://hdl.handle.net/10722/285596-
dc.description.abstractWe propose and demonstrate a novel technique for measuring fiber lengths and locating multiple weak reflections along the fiber using a low-cost continuous wave source, a folded Mach-Zehnder interferometer (MZI), and a frequency shifter. By sweeping the frequency of the shifter, which is located in one path of the MZI, the optical length of the test fiber can be determined precisely from the interference pattern constructed by the reflected signals from the fiber end. Experimentally, for fibers shorter than 10 km, the standard deviations are less than 1 mm. Furthermore, by incorporating lock-in detection and fast Fourier transform techniques, both the locations and the reflectance of multiple reflection sites along one fiber can be resolved with a spatial resolution of about 5 m and a sensitivity better than - 67 dB. This could be a powerful interrogating technique for optical fiber sensor arrays. © 2005 IEEE.-
dc.languageeng-
dc.relation.ispartofIEEE Photonics Technology Letters-
dc.subjectDiscrete fourier transforms (DFTs)-
dc.subjectOptical interferometry-
dc.subjectPhase-locked amplifiers-
dc.subjectOptical fiber measurements-
dc.titleFrequency-shifted Mach-Zehnder interferometer for locating multiple weak reflections along a fiber link-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/LPT.2005.861995-
dc.identifier.scopuseid_2-s2.0-34047198445-
dc.identifier.volume18-
dc.identifier.issue1-
dc.identifier.spage295-
dc.identifier.epage297-
dc.identifier.isiWOS:000235899300098-
dc.identifier.issnl1041-1135-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats