Simple and reliable light launch from a conventional single-mode fiber into a helical-core fiber through an adiabatically tapered splice

Hyuntai Kim, Jongki Kim, Yongmin Jung, Luis Alonso Vazquez-Zuniga, Seung Jong Lee, Geunchang Choi, Kyunghwan Oh, Pu Wang, W. A. Clarkson, Yoonchan Jeong

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5 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)25562-25571
Number of pages10
JournalOptics Express
Issue number23
Publication statusPublished - 2012 Nov 5

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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