Low loss and broadband low back-reflection interconnection between a hollow-core and standard single-mode fiber

Low loss and broadband low back-reflection interconnection between a hollow-core and standard single-mode fiber

We report simultaneous low coupling loss (below 0.2 dB at 1550 nm) and low back-reflection (below −60 dB in the 1200-1600 nm range) between a hollow core fiber and standard single mode optical fiber obtained through the combination of an angled interface and an anti-reflective coating. We perform ex...

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Veröffentlicht in:Optics express 2022-09, Vol.30 (20), p.37006-37014
Hauptverfasser: Suslov, Dmytro, Numkam Fokoua, Eric, Dousek, Daniel, Zhong, Ailing, Zvánovec, Stanislav, Bradley, Thomas D., Poletti, Francesco, Richardson, David J., Komanec, Matěj, Slavík, Radan
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container_end_page 37014
container_issue 20
container_start_page 37006
container_title Optics express
container_volume 30
creator Suslov, Dmytro
Numkam Fokoua, Eric
Dousek, Daniel
Zhong, Ailing
Zvánovec, Stanislav
Bradley, Thomas D.
Poletti, Francesco
Richardson, David J.
Komanec, Matěj
Slavík, Radan
description We report simultaneous low coupling loss (below 0.2 dB at 1550 nm) and low back-reflection (below −60 dB in the 1200-1600 nm range) between a hollow core fiber and standard single mode optical fiber obtained through the combination of an angled interface and an anti-reflective coating. We perform experimental optimization of the interface angle to achieve the best combination of performance in terms of the coupling loss and back-reflection suppression. Furthermore, we examine parasitic cross-coupling to the higher-order modes and show that it does not degrade compared to the case of a flat interface, keeping it below −30 dB and below −20 dB for LP 11 and LP 02 modes, respectively.
doi_str_mv 10.1364/OE.460635
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title Low loss and broadband low back-reflection interconnection between a hollow-core and standard single-mode fiber
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