Open AccessSimple and reliable light launch from a conventional single-mode fiber into a helical-core fiber through an adiabatically tapered splice
Author(s) -
Hyuntai Kim,
Jongki Kim,
Yongmin Jung,
Luis Alonso Vazquez-Zuniga,
Seung Jong Lee,
Geunchang Choi,
Kyunghwan Oh,
Pengfei Wang,
W.A. Clarkson
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.025562
Subject(s) - splice , fusion splicing , optics , single mode optical fiber , offset (computer science) , materials science , core (optical fiber) , optical fiber , photonic crystal fiber , polarization maintaining optical fiber , physics , fiber optic sensor , computer science , chemistry , biochemistry , gene , programming language
We propose a simple and efficient light launch scheme for a helical-core fiber (HCF) by using an adiabatically tapered splice technique, through which we overcome its inherent difficulty with light launch owing to the large lateral offset and angular tilt of its core. We experimentally demonstrate single-mode excitation in the HCF in this configuration, which yields the coupling efficiency of around -5.9 dB (26%) for a ~1.1-μm light input when the splice joint is tapered down to 30 μm in diameter. To our knowledge, this is the first proof-of-principle report on the fusion-splice coupling between an HCF and a conventional single-mode fiber.