Hole-assisted dual concentric core fiber with ultralarge negative dispersion coefficient of −13,200 ps/nm/km

Abstract

We propose a dual concentric core fiber (DCCF) with six homogeneous air holes, designed to realize a large negative dispersion coefficient. We clarify numerically that the dispersion property of the proposed DCCF can be controlled flexibly by adjusting the air-hole structure, and we realize the largest reported negative dispersion of -13,200 ps/nm/km experimentally.

Parametric tunable dispersion compensator: distinctive features and practical issues

“…The wide bandwidth and low loss of the optical fibers are advantageous. New fiber technologies with a high design freedom such as a photonic crystal fiber or a holey fiber are also applicable [13].…”

Numerical Simulation of Three-Core Photonic Crystal Fiber With Large Group-Velocity Dispersion

“…For example, it has been demonstrated experimentally that the chirped fiber Bragg grating operating in the reflection mode can be used for dispersion compensations due to its large dispersion and negligible nonlinear effects [3]- [5]. The dispersion-compensating fibers (DCFs) consisting of two highly asymmetric concentric cores have large normal GVDs ranging from some hundreds to thousands of ps/(nm•km) with an appropriate choice of the fiber parameters [6]- [8]. Moreover, the efficient dispersion managements were also demonstrated by properly designing the index-guiding and bandgap-guiding…”