Splicing tapered inhibited-coupling hypocycloid-core Kagome fiber to SMF fibers

Abstract

We report on tapered inhibited coupling Kagome-fiber with a down-ratio as large as 2.4 while maintaining the hypocycloid-core shape. The insertion-loss of SMF spliced to tapered Kagomefiber was measured with minimum of 0.48dB at 1550nm.

Fusion splice between tapered inhibited coupling hypocycloid-core Kagome fiber and SMF

“…The fiber exhibits a fundamental guidance band with a cut-off wavelength at 1100 nm and a loss figure in the range 90 -170 dB/km. The fiber tapering process consists of the following procedures [11]. Firstly, the cladding at one of the fiber-ends is collapsed while keeping the hypocycloidcore opened by heating the fiber-tip using a commercial filament fusion splicer.…”

“…However, achieving low-loss and mechanically robust splicing between IC Kagome HC-PCF to SMF remains technically challenging due to the large hollow-core size. This problem of mode-field mismatch (MFM) has previously been addressed by tapering down such Kagome fibers and then splicing to SMF [11]. The results obtained show insertion loss figures of as low as 0.6 dB for a hexagonal core-shape 1-cell Kagome fiber (core size of 45 µm) and 2 dB for a circular core-shape 19-cell Kagome fiber (core size of 65 µm).…”

Exploring the Effect of the Core Boundary Curvature in Hollow Antiresonant Fibers

“…A more recent family of hollow antiresonant fibers, already highlighted for its low loss in the infrared [2] and for its relatively low bending loss at large mode field diameters [5], consists of a simpler design in which the air-core is surrounded by a number of touching or non-touching circular capillaries [1,9]. These fiber types offer a better platform to try to understand the effect that the curvature of the membranes surrounding the core has on the overall loss, since different curvatures can be obtained while keeping unchanged key geometrical parameters [5,10]. In a more recent study, a fiber Fig.…”