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Article: Ultrafast single-shot optical vector network analyzer based on coherent time-stretch

TitleUltrafast single-shot optical vector network analyzer based on coherent time-stretch
Authors
Issue Date2020
PublisherAIP Publishing: Open Access Journals. The Journal's web site is located at http://scitation.aip.org/content/aip/journal/app
Citation
APL Photonics, 2020, v. 5 n. 10, p. article no. 106109 How to Cite?
AbstractEver-increasing demands for a higher bandwidth of data in the optical communications augment the operating frequency of components and systems. To accelerate the development of these large-bandwidth technologies, there is a growing demand to characterize the frequency response of optical devices in real time. In this work, we report a method to significantly improve the measurement speed of an optical vector network analyzer (OVNA) with coherent time-stretch (CTS). Single-shot frequency spectrum measurements are enabled by time-stretch technology that maps the spectrum of an optical pulse to the time domain. Compared to single-ended detection, the implementation of coherent detection enables the acquiring of accurate phase information of the signal and also provides the digital processed cancellation of dispersion-induced impairments. By utilizing dispersive time-stretch and digital coherent detection techniques, we demonstrate an ultrafast and wide bandwidth OVNA. We successfully characterize its performance by measuring the frequency response of a micro-ring cavity and a silicon Mach–Zehnder interferometer with 0.07-nm spectral resolution and 0.156-rad phase accuracy over 10-nm bandwidth. Meanwhile, the dynamic responses of the magnitude and phase, and the drift of the resonance wavelength of the micro-ring modulator under thermal tuning, were fully recorded by the CTS-OVNA at a 20-MHz frame rate.
Persistent Identifierhttp://hdl.handle.net/10722/304223
ISSN
2020 Impact Factor: 5.672
2020 SCImago Journal Rankings: 2.094
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLi, AL-
dc.contributor.authorXu, BL-
dc.contributor.authorFu, CS-
dc.contributor.authorZhang, DL-
dc.contributor.authorDuan, EY-
dc.contributor.authorLi, FY-
dc.contributor.authorYang, GN-
dc.contributor.authorYu, HY-
dc.contributor.authorZhang, IC-
dc.contributor.authorWong, JKKY-
dc.contributor.authorZhang, KX-
dc.date.accessioned2021-09-23T08:56:59Z-
dc.date.available2021-09-23T08:56:59Z-
dc.date.issued2020-
dc.identifier.citationAPL Photonics, 2020, v. 5 n. 10, p. article no. 106109-
dc.identifier.issn2378-0967-
dc.identifier.urihttp://hdl.handle.net/10722/304223-
dc.description.abstractEver-increasing demands for a higher bandwidth of data in the optical communications augment the operating frequency of components and systems. To accelerate the development of these large-bandwidth technologies, there is a growing demand to characterize the frequency response of optical devices in real time. In this work, we report a method to significantly improve the measurement speed of an optical vector network analyzer (OVNA) with coherent time-stretch (CTS). Single-shot frequency spectrum measurements are enabled by time-stretch technology that maps the spectrum of an optical pulse to the time domain. Compared to single-ended detection, the implementation of coherent detection enables the acquiring of accurate phase information of the signal and also provides the digital processed cancellation of dispersion-induced impairments. By utilizing dispersive time-stretch and digital coherent detection techniques, we demonstrate an ultrafast and wide bandwidth OVNA. We successfully characterize its performance by measuring the frequency response of a micro-ring cavity and a silicon Mach–Zehnder interferometer with 0.07-nm spectral resolution and 0.156-rad phase accuracy over 10-nm bandwidth. Meanwhile, the dynamic responses of the magnitude and phase, and the drift of the resonance wavelength of the micro-ring modulator under thermal tuning, were fully recorded by the CTS-OVNA at a 20-MHz frame rate.-
dc.languageeng-
dc.publisherAIP Publishing: Open Access Journals. The Journal's web site is located at http://scitation.aip.org/content/aip/journal/app-
dc.relation.ispartofAPL Photonics-
dc.rightsAuthor names, Journal Title, Vol. 5, Article ID 106109, (2020); licensed under a Creative Commons Attribution (CC BY) license.-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleUltrafast single-shot optical vector network analyzer based on coherent time-stretch-
dc.typeArticle-
dc.identifier.emailWong, JKKY: kywong@eee.hku.hk-
dc.identifier.authorityWong, JKKY=rp00189-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1063/5.0022121-
dc.identifier.scopuseid_2-s2.0-85093985882-
dc.identifier.hkuros325300-
dc.identifier.volume5-
dc.identifier.issue10-
dc.identifier.spagearticle no. 106109-
dc.identifier.epagearticle no. 106109-
dc.identifier.isiWOS:000583214700001-
dc.publisher.placeUnited States-

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