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Supercontinuum generation in As2S3 waveguides fabricated without direct etching

Title
Supercontinuum generation in As2S3 waveguides fabricated without direct etching
Authors
Hwang, JoonhyukKim, Dae-GonHan, SangyoonJeong, DonginLee, Yong-HeeChoi, Duk-YongLee, Hansuek
DGIST Authors
Hwang, Joonhyuk; Kim, Dae-Gon; Han, Sangyoon; Jeong, Dongin; Lee, Yong-Hee; Choi, Duk-Yong; Lee, Hansuek
Issue Date
2021-05
Citation
Optics Letters, 46(10), 2413-2416
Type
Article
Keywords
CoremakingDispersion (waves)EtchingOptical pumpingSilicaWaveguidesChalcogenide glassDispersion controlDispersion profileEtching processLow material absorptionSubstructure geometrySuper continuumTelecommunication wavelengthsSupercontinuum generation
ISSN
0146-9592
Abstract
We report a supercontinuum generation (SCG) in a waveguide that spontaneously forms without an etching process during the deposition of a core material on a preformed SiO2 substructure. The mechanism of dispersion control for this new, to the best of our knowledge, type of waveguide is analyzed by numerical simulation, which results in a design rule to achieve a target dispersion profile by adjusting the substructure geometry. SCG is experimentally demonstrated with a waveguide made of As2S3, chalcogenide glass, which has low material absorption over the mid-IR range. A dispersion-controlled waveguide with a length of 10 mm pumped with 77 pJ pulses at a telecommunication wavelength of 1560 nm resulted in a supercontinuum that extends by more than 1.5 octaves. © 2021 Optical Society of America
URI
http://hdl.handle.net/20.500.11750/15467
DOI
10.1364/OL.422606
Publisher
Optical Society of America
Related Researcher
  • Author Han, Sangyoon Intelligent Nanophotonics Lab
  • Research Interests Nanophotonic devices; photonic integrated circuits; optical neural networks; optical MEMS
Files:
There are no files associated with this item.
Collection:
Department of Robotics and Mechatronics EngineeringIntelligent Nanophotonics Lab1. Journal Articles


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