Ultra-large bandwidth hollow-core guiding in all-silica Bragg fibers with nano-supports
Vienne, G. · Xu, Y. · Jakobsen, C. · Deyerl, H. -J. · Jensen, J. B. · Sorensen, T. · Hansen, T. P. · Huang, Y. · Terrel, M. · Lee, R. K. · Mortensen, N. A. · Broeng, J. · Simonsen, H. · Bjarklev, A. · Yariv, A.
Original · EN
We demonstrate a new class of hollow-core Bragg fibers that are composed of concentric cylindrical silica rings separated by nanoscale support bridges. We theoretically predict and experimentally observe hollow-core confinement over an octave frequency range. The bandwidth of bandgap guiding in this new class of Bragg fibers exceeds that of other hollow-core fibers reported in the literature. With only three rings of silica cladding layers, these Bragg fibers achieve propagation loss of the order of 1 dB/m.
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