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Conference Paper: Ultra-wideband fiber optical parametric amplifier for spectrally-encoded microscopy

TitleUltra-wideband fiber optical parametric amplifier for spectrally-encoded microscopy
Authors
Issue Date2016
PublisherSPIE - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xml?WT.svl=mddp2
Citation
The 2016 SPIE Photonics West Conference, San Francisco, CA., 13-18 February 2016. In Proceedings of SPIE, 2016, v. 9720, article no. 97200W How to Cite?
AbstractFiber optical parametric amplifier (FOPA) has gained its popularity in the telecommunication systems at the 1.5-um window for its gain, bandwidth etc. Unfortunately, its practical application at the bio-favorable window, i.e. 1.0 um, still requires substantial efforts. Thus, here we report a versatile all-fiber optical parametric amplifier for life-science (OPALS) at 1.0 um as an add-on module for optical imaging system. The parametric gain fiber (photonic-crystal fiber (PCF), 110 m in length) is specially designed to reduce the longitudinal dispersion fluctuation, which yields a superior figure of merit, i.e. a total insertion loss of ~2.5 dB and a nonlinear coefficient of 34 /(W•km). Our OPALS delivers a superior performance in terms of gain (~158,000), bandwidth (>100 nm) and gain flatness (< 3-dB ripple). Experimentally, we show that: 1) a wavelength-varying quasi-monochrome pump achieves a 52-dB gain and 160-nm bandwidth, but at the expense of a larger gain-spectrum ripple, i.e. a bell-shaped; 2) the birefringence of the parametric gain medium, i.e. PCF in this case, can be utilized to improve the gain-spectrum flatness of OPALS by 10.5 dB, meanwhile a 100-nm bandwidth can be guaranteed; 3) the gain-spectrum flatness of OPALS can be further flattened by using a high-speed wavelength-sweeping pump, which exhibits a 110-nm flat gain spectrum with ripple less than 3 dB. Finally, we employ this versatile all-fiber OPALS as an add-on module to enhance the sensitivity of a spectrally-encoded microscope by 47 dB over an ultra-wide spectral range.
DescriptionBiomedical Spectroscopy, Microscopy, and Imaging: 9720 - High-Speed Biomedical Imaging and Spectroscopy: Toward Big Data Instrumentation and Management: Paper 9720-30
Conference Presentation Recording
Persistent Identifierhttp://hdl.handle.net/10722/234152
ISSN
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWei, X-
dc.contributor.authorTan, S-
dc.contributor.authorMussot, A-
dc.contributor.authorKudlinski, A-
dc.contributor.authorTsia, KKM-
dc.contributor.authorWong, KKY-
dc.date.accessioned2016-10-14T06:59:23Z-
dc.date.available2016-10-14T06:59:23Z-
dc.date.issued2016-
dc.identifier.citationThe 2016 SPIE Photonics West Conference, San Francisco, CA., 13-18 February 2016. In Proceedings of SPIE, 2016, v. 9720, article no. 97200W-
dc.identifier.issn0277-786X-
dc.identifier.urihttp://hdl.handle.net/10722/234152-
dc.descriptionBiomedical Spectroscopy, Microscopy, and Imaging: 9720 - High-Speed Biomedical Imaging and Spectroscopy: Toward Big Data Instrumentation and Management: Paper 9720-30-
dc.descriptionConference Presentation Recording-
dc.description.abstractFiber optical parametric amplifier (FOPA) has gained its popularity in the telecommunication systems at the 1.5-um window for its gain, bandwidth etc. Unfortunately, its practical application at the bio-favorable window, i.e. 1.0 um, still requires substantial efforts. Thus, here we report a versatile all-fiber optical parametric amplifier for life-science (OPALS) at 1.0 um as an add-on module for optical imaging system. The parametric gain fiber (photonic-crystal fiber (PCF), 110 m in length) is specially designed to reduce the longitudinal dispersion fluctuation, which yields a superior figure of merit, i.e. a total insertion loss of ~2.5 dB and a nonlinear coefficient of 34 /(W•km). Our OPALS delivers a superior performance in terms of gain (~158,000), bandwidth (>100 nm) and gain flatness (< 3-dB ripple). Experimentally, we show that: 1) a wavelength-varying quasi-monochrome pump achieves a 52-dB gain and 160-nm bandwidth, but at the expense of a larger gain-spectrum ripple, i.e. a bell-shaped; 2) the birefringence of the parametric gain medium, i.e. PCF in this case, can be utilized to improve the gain-spectrum flatness of OPALS by 10.5 dB, meanwhile a 100-nm bandwidth can be guaranteed; 3) the gain-spectrum flatness of OPALS can be further flattened by using a high-speed wavelength-sweeping pump, which exhibits a 110-nm flat gain spectrum with ripple less than 3 dB. Finally, we employ this versatile all-fiber OPALS as an add-on module to enhance the sensitivity of a spectrally-encoded microscope by 47 dB over an ultra-wide spectral range.-
dc.languageeng-
dc.publisherSPIE - International Society for Optical Engineering. The Journal's web site is located at http://spie.org/x1848.xml?WT.svl=mddp2-
dc.relation.ispartofProceedings of SPIE-
dc.titleUltra-wideband fiber optical parametric amplifier for spectrally-encoded microscopy-
dc.typeConference_Paper-
dc.identifier.emailWei, X: xmwei@hku.hk-
dc.identifier.emailTsia, KKM: tsia@hku.hk-
dc.identifier.emailWong, KKY: kywong@eee.hku.hk-
dc.identifier.authorityTsia, KKM=rp01389-
dc.identifier.authorityWong, KKY=rp00189-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1117/12.2210811-
dc.identifier.hkuros267550-
dc.identifier.volume9720-
dc.identifier.spagearticle no. 97200W-
dc.identifier.epagearticle no. 97200W-
dc.identifier.isiWOS:000383735900023-
dc.publisher.placeUnited States-

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