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dc.contributor.authorKuntz, Katanya B.
dc.contributor.authorWheatley, Trevor A.
dc.contributor.authorSong, Hongbin
dc.contributor.authorWebb, James G.
dc.contributor.authorMabrok, Mohamed
dc.contributor.authorHuntington, Elanor H.
dc.contributor.authorYonezawa, Hidehiro
dc.date.accessioned2017-02-15T08:32:16Z
dc.date.available2017-02-15T08:32:16Z
dc.date.issued2017-01-09
dc.identifier.citationKuntz KB, Wheatley TA, Song H, Webb JG, Mabrok MA, et al. (2017) Ultra-wide frequency response measurement of an optical system with a DC photo-detector. Optics Express 25: 573. Available: http://dx.doi.org/10.1364/OE.25.000573.
dc.identifier.issn1094-4087
dc.identifier.doi10.1364/OE.25.000573
dc.identifier.urihttp://hdl.handle.net/10754/622912
dc.description.abstractPrecise knowledge of an optical device's frequency response is crucial for it to be useful in most applications. Traditional methods for determining the frequency response of an optical system (e.g. optical cavity or waveguide modulator) usually rely on calibrated broadband photo-detectors or complicated RF mixdown operations. As the bandwidths of these devices continue to increase, there is a growing need for a characterization method that does not have bandwidth limitations, or require a previously calibrated device. We demonstrate a new calibration technique on an optical system (consisting of an optical cavity and a high-speed waveguide modulator) that is free from limitations imposed by detector bandwidth, and does not require a calibrated photo-detector or modulator. We use a low-frequency (DC) photo-detector to monitor the cavity's optical response as a function of modulation frequency, which is also used to determine the modulator's frequency response. Knowledge of the frequency-dependent modulation depth allows us to more precisely determine the cavity's characteristics (free spectral range and linewidth). The precision and repeatability of our technique is demonstrated by measuring the different resonant frequencies of orthogonal polarization cavity modes caused by the presence of a non-linear crystal. Once the modulator has been characterized using this simple method, the frequency response of any passive optical element can be determined to a fine resolution (e.g. kilohertz) over several gigahertz.
dc.description.sponsorshipThis work was supported financially by the Australian Research Council Centres of Excellence scheme number CE110001027, the Office of Naval Research (ONR), and Industry Canada. The authors would like to thank Greg Milford for lending us the RF signal generator, and Darryl Budarick, Rick Whyte, Shane Brandon, and Mitchell Sinclair for much appreciated technical support. We would also like to thank David Moilanen for fruitful discussions.
dc.publisherThe Optical Society
dc.relation.urlhttps://www.osapublishing.org/oe/abstract.cfm?uri=oe-25-2-573
dc.relation.urlhttp://arxiv.org/pdf/1611.01794
dc.rightsThis paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: https://www.osapublishing.org/oe/abstract.cfm?uri=oe-25-2-573. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
dc.rightsThis file is an open access version redistributed from: http://arxiv.org/pdf/1611.01794
dc.titleUltra-wide frequency response measurement of an optical system with a DC photo-detector
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.identifier.journalOptics Express
dc.eprint.versionPre-print
dc.contributor.institutionSchool of Engineering and Information Technology, University of New South Wales, Canberra, ACT, 2600, Australia
dc.contributor.institutionCentre for Quantum Computation and Communication Technology, Australian Research Council, Australia
dc.contributor.institutionInstitute for Quantum Computing, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
dc.contributor.institutionDepartment of Physics and Astronomy, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
dc.contributor.institutionSchool of Humanity and Social Science, Chinese University of Hong Kong, Shen Zhen, Guang Dong, China
dc.contributor.institutionEOS Space Systems Pty Ltd, EOS House, Mt Stromlo Observatory, Cotter Road, Weston Creek, ACT, 2611, Australia
dc.contributor.institutionResearch School of Engineering, College of Engineering and Computer Science, Australian National University, Canberra, ACT, 2600, Australia
dc.identifier.arxivid1611.01794
kaust.personMabrok, Mohamed
refterms.dateFOA2021-06-24T06:09:17Z
dc.date.published-online2017-01-09
dc.date.published-print2017-01-23


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