Direct and low-loss connection between a hollow-core optical fiber and a dispersion compensating fiber for dispersion-free delivery of short optical pulses in hollow-core fiber
Direct and low-loss connection between a hollow-core optical fiber and a dispersion compensating fiber for dispersion-free delivery of short optical pulses in hollow-core fiber
Hollow-core fibers (HCFs) have been under intense research interest thanks to their many advantages including low latency, low nonlinearity, and temperature insensitivity. The most recent progress on the double nested antiresonant nodeless fiber (DNANF) demonstrated fiber losses of only 0.174 dB/km. Transmission of ultrashort, high-peak-power pulses can greatly benefit from low nonlinearity of HCFs. However, the waveguide dispersion in HCFs such as DNANF is typically 2-3 ps/(nm·km) in the low-loss transmission region, still causing unwanted pulses broadening. Here, we demonstrate a low-loss interconnection between HCF and a dispersion-compensating fiber (DCF), enabling to obtain HCF+DCF link with zero-net dispersion. To adapt the relatively small mode-filed diameter (MFD) of DCF (4.9 µm) to the MFD of the HCF, we first splice a short segment of graded-index (GRIN) multi-mode fiber on the DCF. The GRIN fiber is then polished to a specific length to obtain an optimal MFD adaptation to our HCF, which was a nested antiresonant nodeless fiber (NANF) with 26.3 µm MFD at 1550 nm. We obtained a loss of only 0.55 dB for the whole DCF-GRIN-NANF component. By depositing an anti-reflective coating on the mode-field adapter end-face, the interconnection loss can be further reduced to 0.39 dB.
dispersion-compensating fiber, high-power delivery, low-loss interconnection, Nested antiresonant nodeless fiber, ultra-high numerical aperture fiber
Zhong, Ailing
4dd4add1-12d2-4e78-828b-a60d2b57ff83
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Dousek, Daniel
e7308d3b-fdcc-4d9f-ad98-bc905774c860
Suslov, Dmytro
5a67f33b-9b3a-428e-910e-9fbc8d1a6248
Zvánovec, Stanislav
b1345026-8f97-4e57-816e-7ce19dc54b3c
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Komanec, Matěj
b7039aca-b47b-4365-896b-f3574fd175eb
2 February 2023
Zhong, Ailing
4dd4add1-12d2-4e78-828b-a60d2b57ff83
Slavík, Radan
2591726a-ecc0-4d1a-8e1d-4d0fd8da8f7d
Dousek, Daniel
e7308d3b-fdcc-4d9f-ad98-bc905774c860
Suslov, Dmytro
5a67f33b-9b3a-428e-910e-9fbc8d1a6248
Zvánovec, Stanislav
b1345026-8f97-4e57-816e-7ce19dc54b3c
Poletti, Francesco
9adcef99-5558-4644-96d7-ce24b5897491
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Komanec, Matěj
b7039aca-b47b-4365-896b-f3574fd175eb
Zhong, Ailing, Slavík, Radan, Dousek, Daniel, Suslov, Dmytro, Zvánovec, Stanislav, Poletti, Francesco, Richardson, David J. and Komanec, Matěj
(2023)
Direct and low-loss connection between a hollow-core optical fiber and a dispersion compensating fiber for dispersion-free delivery of short optical pulses in hollow-core fiber.
Kaierle, Stefan and Kleine, Klaus R.
(eds.)
In High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XII.
vol. 12414,
SPIE..
(doi:10.1117/12.2648720).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Hollow-core fibers (HCFs) have been under intense research interest thanks to their many advantages including low latency, low nonlinearity, and temperature insensitivity. The most recent progress on the double nested antiresonant nodeless fiber (DNANF) demonstrated fiber losses of only 0.174 dB/km. Transmission of ultrashort, high-peak-power pulses can greatly benefit from low nonlinearity of HCFs. However, the waveguide dispersion in HCFs such as DNANF is typically 2-3 ps/(nm·km) in the low-loss transmission region, still causing unwanted pulses broadening. Here, we demonstrate a low-loss interconnection between HCF and a dispersion-compensating fiber (DCF), enabling to obtain HCF+DCF link with zero-net dispersion. To adapt the relatively small mode-filed diameter (MFD) of DCF (4.9 µm) to the MFD of the HCF, we first splice a short segment of graded-index (GRIN) multi-mode fiber on the DCF. The GRIN fiber is then polished to a specific length to obtain an optimal MFD adaptation to our HCF, which was a nested antiresonant nodeless fiber (NANF) with 26.3 µm MFD at 1550 nm. We obtained a loss of only 0.55 dB for the whole DCF-GRIN-NANF component. By depositing an anti-reflective coating on the mode-field adapter end-face, the interconnection loss can be further reduced to 0.39 dB.
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More information
Published date: 2 February 2023
Additional Information:
Funding Information: The research was supported by the Czech Science Foundation project GACR 22-32180S, by the Czech Technical University in Prague project SGS20/166/OHK3/3T/13, by the EPSRC project “Airguide Photonics” under grant EP/P030181/1. F. Poletti gratefully acknowledges EU ERC (grant 682724); R. Slavík was supported by RAEng Fellowship.
Venue - Dates:
High-Power Laser Materials Processing: Applications, Diagnostics, and Systems XII 2023, , San Francisco, United States, 2023-02-01 - 2023-02-02
Keywords:
dispersion-compensating fiber, high-power delivery, low-loss interconnection, Nested antiresonant nodeless fiber, ultra-high numerical aperture fiber
Identifiers
Local EPrints ID: 481528
URI: http://eprints.soton.ac.uk/id/eprint/481528
ISSN: 0277-786X
PURE UUID: de4fabc9-9871-42a8-8cd5-10e6d278b779
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Date deposited: 31 Aug 2023 16:43
Last modified: 18 Mar 2024 03:12
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Contributors
Author:
Ailing Zhong
Author:
Radan Slavík
Author:
Daniel Dousek
Author:
Dmytro Suslov
Author:
Stanislav Zvánovec
Author:
Francesco Poletti
Author:
Matěj Komanec
Editor:
Stefan Kaierle
Editor:
Klaus R. Kleine
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