Low loss and broadband low back-reflection interconnection between a hollow-core and standard single-mode fiber.
Opt Express
; 30(20): 37006-37014, 2022 Sep 26.
Article
en En
| MEDLINE
| ID: mdl-36258619
ABSTRACT
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 LP11 and LP02 modes, respectively.
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MEDLINE
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Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2022
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Article