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Article: Video-rate centimeter-range optical coherence tomography based on dual optical frequency combs by electro-optic modulators

TitleVideo-rate centimeter-range optical coherence tomography based on dual optical frequency combs by electro-optic modulators
Authors
Issue Date2018
PublisherOptical Society of America: Open Access Journals. The Journal's web site is located at http://www.opticsexpress.org
Citation
Optics Express, 2018, v. 26 n. 19, p. 24928-24939 How to Cite?
AbstractImaging speed and range are two important parameters for optical coherence tomography (OCT). A conventional video-rate centimeter-range OCT requires an optical source with hundreds of kHz repetition rate and needs the support of broadband detectors and electronics (>1 GHz). In this paper, a type of video-rate centimeter-range OCT system is proposed and demonstrated based on dual optical frequency combs by leveraging electro-optic modulators. The repetition rate difference between dual combs, i.e. the A-scan rate of dual-comb OCT, can be adjusted within 0~6 MHz. By down-converting the interference signal from optical domain to radio-frequency domain through dual comb beating, the down-converted bandwidth of the interference signal is less than 22.5 MHz which is at least two orders of magnitude lower than that in conventional OCT systems. A LabVIEW program is developed for video-rate operation, and the centimeter imaging depth is proved by using 10 pieces of 1-mm thick glass stacked as the sample. The effective beating bandwidth between two optical comb sources is 7 nm corresponding to ~108 comb lines, and the axial resolution of the dual-comb OCT is 158 µm. Dual optical frequency combs provide a promising solution to relax the detection bandwidth requirement in fast long-range OCT systems.
Persistent Identifierhttp://hdl.handle.net/10722/275021
ISSN
2017 Impact Factor: 3.356
2015 SCImago Journal Rankings: 2.186
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorKang, J-
dc.contributor.authorFeng, P-
dc.contributor.authorLi, B-
dc.contributor.authorZhang, C-
dc.contributor.authorWei, X-
dc.contributor.authorLam, EYM-
dc.contributor.authorTsia, KKM-
dc.contributor.authorWong, KKY-
dc.date.accessioned2019-09-10T02:33:50Z-
dc.date.available2019-09-10T02:33:50Z-
dc.date.issued2018-
dc.identifier.citationOptics Express, 2018, v. 26 n. 19, p. 24928-24939-
dc.identifier.issn1094-4087-
dc.identifier.urihttp://hdl.handle.net/10722/275021-
dc.description.abstractImaging speed and range are two important parameters for optical coherence tomography (OCT). A conventional video-rate centimeter-range OCT requires an optical source with hundreds of kHz repetition rate and needs the support of broadband detectors and electronics (>1 GHz). In this paper, a type of video-rate centimeter-range OCT system is proposed and demonstrated based on dual optical frequency combs by leveraging electro-optic modulators. The repetition rate difference between dual combs, i.e. the A-scan rate of dual-comb OCT, can be adjusted within 0~6 MHz. By down-converting the interference signal from optical domain to radio-frequency domain through dual comb beating, the down-converted bandwidth of the interference signal is less than 22.5 MHz which is at least two orders of magnitude lower than that in conventional OCT systems. A LabVIEW program is developed for video-rate operation, and the centimeter imaging depth is proved by using 10 pieces of 1-mm thick glass stacked as the sample. The effective beating bandwidth between two optical comb sources is 7 nm corresponding to ~108 comb lines, and the axial resolution of the dual-comb OCT is 158 µm. Dual optical frequency combs provide a promising solution to relax the detection bandwidth requirement in fast long-range OCT systems.-
dc.languageeng-
dc.publisherOptical Society of America: Open Access Journals. The Journal's web site is located at http://www.opticsexpress.org-
dc.relation.ispartofOptics Express-
dc.rightsOptics Express. Copyright © Optical Society of America: Open Access Journals.-
dc.rights© XXXX [year] Optical Society of America]. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleVideo-rate centimeter-range optical coherence tomography based on dual optical frequency combs by electro-optic modulators-
dc.typeArticle-
dc.identifier.emailLam, EYM: elam@eee.hku.hk-
dc.identifier.emailTsia, KKM: tsia@hku.hk-
dc.identifier.emailWong, KKY: kywong@eee.hku.hk-
dc.identifier.authorityLam, EYM=rp00131-
dc.identifier.authorityTsia, KKM=rp01389-
dc.identifier.authorityWong, KKY=rp00189-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1364/OE.26.024928-
dc.identifier.scopuseid_2-s2.0-85053407684-
dc.identifier.hkuros303392-
dc.identifier.hkuros305795-
dc.identifier.volume26-
dc.identifier.issue19-
dc.identifier.spage24928-
dc.identifier.epage24939-
dc.identifier.isiWOS:000444705000052-
dc.publisher.placeUnited States-

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