Dresden 2017 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

HL: Fachverband Halbleiterphysik

HL 86: New Materials

HL 86.11: Vortrag

Freitag, 24. März 2017, 12:30–12:45, POT 112

Photonic crystal fibers with disordered claddings — •Swaathi Upendar¹, Guangrui Li², Maxim L. Nesterov¹, Markus Schmidt², and Thomas Weiss¹ — ¹4th Physics Institute and Research Center SCoPE, University of Stuttgart, Germany — ²Leibniz Institute of Photonic Technology, Jena, Germany

Photonic crystal fibers use the photonic band gap effect to confine light in a central defect core with a periodic lattice as its cladding. When such photonic crystal fibers are fabricated, the cladding is never truly perfect as the fabrication process can result in different types of disorder such as diameter, position and shape disorder.

In this contribution, we present numerical investigations of the influence of disorder on the density of cladding states and the dispersion of the fundamental mode of the fiber. In particular, we investigate diameter disorder for an all solid fiber with high index strands in a silica background. We find that the response of the fiber is highly dependent on the range of diameter fluctuations. While fluctuations in the whole cladding region results in a narrowing of the band gap and hamper the light guidance, we observe that disorder in the core surround provides additional means to control the properties of the guided modes and to reduce the confinement loss.