Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation
An ultrabroadband mid-infrared supercontinuum (SC) source has been designed and modeled using a 10-mm-long all-chalcogenide triangular-core fiber (TCF). The TCF structure can be fabricated from Ge 11.5 As 24 Se 64.5 chalcogenide glass as a core and Ge 11.5 As 24 S 64.5 chalcogenide glass for its cla...
Saved in:
Main Authors: | , , |
---|---|
Format: | Article |
Published: |
Optical Society of America
2018
|
Subjects: | |
Online Access: | http://eprints.um.edu.my/21687/ https://doi.org/10.1364/JOSAB.35.000266 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.um.eprints.21687 |
---|---|
record_format |
eprints |
spelling |
my.um.eprints.216872019-07-22T04:57:48Z http://eprints.um.edu.my/21687/ Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation Karim, Mohammad Rezaul Ahmad, Harith Rahman, B.M. Azizur QC Physics TK Electrical engineering. Electronics Nuclear engineering An ultrabroadband mid-infrared supercontinuum (SC) source has been designed and modeled using a 10-mm-long all-chalcogenide triangular-core fiber (TCF). The TCF structure can be fabricated from Ge 11.5 As 24 Se 64.5 chalcogenide glass as a core and Ge 11.5 As 24 S 64.5 chalcogenide glass for its cladding running along the length of the fiber instead of air holes. Assuming the pump operates at 4 μm, the TCF is optimized by varying its side length using both anomalous-dispersion and all-normal-dispersion SC generation. Mid-infrared-region SC spectral broadening spanning beyond 15 μm could be generated with a low peak power of 3 kW by the proposed TCF structure optimized with varying its side length between 7 and 8 μm in anomalous-dispersion pumping. On the other hand, the TCF side length has to be decreased to 5.5 μm and below to optimize it for pumping in all-normal-dispersion-region SC generation. A coherent flat-top SC evolution in the mid-infrared region of up to 7 μm could be observed by this design with the same pump peak power and pulse duration applied before. The ultrawide optical bandwidth obtained by the proposed TCF design can be an effective tool for mid-infrared-region applications such as optical coherence tomography, molecular fingerprint spectroscopy, and biomedical imaging. Optical Society of America 2018 Article PeerReviewed Karim, Mohammad Rezaul and Ahmad, Harith and Rahman, B.M. Azizur (2018) Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation. Journal of the Optical Society of America B, 35 (2). pp. 266-275. ISSN 0740-3224 https://doi.org/10.1364/JOSAB.35.000266 doi:10.1364/JOSAB.35.000266 |
institution |
Universiti Malaya |
building |
UM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Malaya |
content_source |
UM Research Repository |
url_provider |
http://eprints.um.edu.my/ |
topic |
QC Physics TK Electrical engineering. Electronics Nuclear engineering |
spellingShingle |
QC Physics TK Electrical engineering. Electronics Nuclear engineering Karim, Mohammad Rezaul Ahmad, Harith Rahman, B.M. Azizur Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation |
description |
An ultrabroadband mid-infrared supercontinuum (SC) source has been designed and modeled using a 10-mm-long all-chalcogenide triangular-core fiber (TCF). The TCF structure can be fabricated from Ge 11.5 As 24 Se 64.5 chalcogenide glass as a core and Ge 11.5 As 24 S 64.5 chalcogenide glass for its cladding running along the length of the fiber instead of air holes. Assuming the pump operates at 4 μm, the TCF is optimized by varying its side length using both anomalous-dispersion and all-normal-dispersion SC generation. Mid-infrared-region SC spectral broadening spanning beyond 15 μm could be generated with a low peak power of 3 kW by the proposed TCF structure optimized with varying its side length between 7 and 8 μm in anomalous-dispersion pumping. On the other hand, the TCF side length has to be decreased to 5.5 μm and below to optimize it for pumping in all-normal-dispersion-region SC generation. A coherent flat-top SC evolution in the mid-infrared region of up to 7 μm could be observed by this design with the same pump peak power and pulse duration applied before. The ultrawide optical bandwidth obtained by the proposed TCF design can be an effective tool for mid-infrared-region applications such as optical coherence tomography, molecular fingerprint spectroscopy, and biomedical imaging. |
format |
Article |
author |
Karim, Mohammad Rezaul Ahmad, Harith Rahman, B.M. Azizur |
author_facet |
Karim, Mohammad Rezaul Ahmad, Harith Rahman, B.M. Azizur |
author_sort |
Karim, Mohammad Rezaul |
title |
Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation |
title_short |
Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation |
title_full |
Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation |
title_fullStr |
Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation |
title_full_unstemmed |
Design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation |
title_sort |
design and modeling of dispersion-engineered all-chalcogenide triangular-core fiber for mid-infrared-region supercontinuum generation |
publisher |
Optical Society of America |
publishDate |
2018 |
url |
http://eprints.um.edu.my/21687/ https://doi.org/10.1364/JOSAB.35.000266 |
_version_ |
1643691631439773696 |
score |
13.19449 |