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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 Conference Proceedings, 2016, v. 9720, paper no. 9720-30 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
Persistent Identifierhttp://hdl.handle.net/10722/234152
ISSN

 

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 Conference Proceedings, 2016, v. 9720, paper no. 9720-30-
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.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.ispartofSPIE - International Society for Optical Engineering Proceedings-
dc.rightsSPIE - International Society for Optical Engineering Proceedings. Copyright © SPIE - International Society for Optical Engineering.-
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.identifier.doi10.1117/12.2210811-
dc.identifier.hkuros267550-
dc.identifier.volume9720, paper no. 9720-30-
dc.identifier.spage9720-
dc.identifier.epage30-
dc.publisher.placeUnited States-
dc.description.otherThe 2016 SPIE Photonics West Conference, San Francisco, CA., 13-18 February 2016. In Conference Proceedings, 2016, v. 9720, paper no. 9720-30-

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