Dual-Comb Swept-Wavelength Interferometry: Theory and ExperimentShow others and affiliations
2022 (English)In: Journal of Lightwave Technology, ISSN 0733-8724, E-ISSN 1558-2213, Vol. 40, no 19, p. 6508-6516Article in journal (Refereed) Published
Abstract [en]
Much efforts have been put to elaborate and improve different high precision measurement schemes for characterization of advanced photonic devices and optical fibers with increasing bandwidth requirements. In light of this, swept-wavelength interferometry and dual-comb spectroscopy have been extensively applied in characterization procedures. In this paper we present in detail an experimental scheme that combines these two techniques and overcomes their limitations by using a tunable laser source in order to sweep over the frequency comb spacing and capture all intermediate frequencies. We demonstrate full-field broadband measurements over 1.25 THz comb bandwidth with increased frequency resolution, which can be performed in only 5 ms sweep. We also show that the nonlinearity of the laser sweep can be removed without an auxiliary interferometer in the setup.
Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc. , 2022. Vol. 40, no 19, p. 6508-6516
Keywords [en]
characterization measurements, Dual-comb spectroscopy, swept-wavelength interferometry, Bandwidth, Laser beams, Optical fibers, Phase measurement, Photonic devices, Characterization measurement, Frequency measurements, High-precision measurement, Measurement by laser beam, Optical interferometry, Receiver, Sweep-wavelength interferometry, Swept wavelength, Wavelength measurement, Interferometry
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:ri:diva-61704DOI: 10.1109/JLT.2022.3196161Scopus ID: 2-s2.0-85135752687OAI: oai:DiVA.org:ri-61704DiVA, id: diva2:1722562
2022-12-292022-12-292023-04-28Bibliographically approved