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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, Joonhyuk; Kim, Dae-Gon; Han, Sangyoon; Jeong, Dongin; Lee, Yong-Hee; Choi, Duk-Yong; Lee, 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
- Coremaking; Dispersion (waves); Etching; Optical pumping; Silica; Waveguides; Chalcogenide glass; Dispersion control; Dispersion profile; Etching process; Low material absorption; Substructure geometry; Super continuum; Telecommunication wavelengths; Supercontinuum 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
-
-
Han, Sangyoon
Intelligent Nanophotonics Lab
-
Research Interests
Nanophotonic devices; photonic integrated circuits; optical neural networks; optical MEMS
- Files:
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- Collection:
- Department of Robotics and Mechatronics EngineeringIntelligent Nanophotonics Lab1. Journal Articles
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