Masanori Koshiba

TL;DR: In order to control dispersion and dispersion slope of indexguiding photonic crystal fibers (PCFs), a new controlling technique of chromatic dispersion in PCF is reported and it is shown from numerical results that it is possible to design a fourring PCF with flattened dispersion.

TL;DR: In this article, the propagation characteristics of multilayer channel waveguides with multiple quantum well (MQW) materials and with the MQW materials replaced by a single homogeneous material with the root mean square value of the refractive indexes are compared.

TL;DR: In this article, a full vectorial imaginary distance beam propagation method based on a finite element scheme is proposed to investigate the leakage due to a finite number of arrays of air holes in photonic-crystal holey fibers (HFs).

TL;DR: In this paper, an analytical expression of the average power-coupling coefficient (PCC) based on an exponential autocorrelation function is derived, resulting in no need for heavy numerical computations.

TL;DR: In this article, the authors demonstrate 1.01-Pb/s transmission over 52 km with the highest aggregate spectral efficiency of 91.4 b/s/Hz by using low-crosstalk one-ring-structured 12-core fiber.