Wideband Dispersion Compensation in Square Lattice Photonic Crystal Fibe

Mansouri-Birjandi, Mohammad Ali; Jafari, Esmat

doi:10.22070/jce.2018.2424.1047

Wideband Dispersion Compensation in Square Lattice Photonic Crystal Fibe

Document Type : Research Paper

Authors

Mohammad Ali Mansouri-Birjandi ¹

Esmat Jafari ²

¹ Department of Electrical and Electronics, Faculty of Electrical and Computer Engineering, University of Sistan and Baluchestan, Zahedan, Iran.

² Department of Electrical and Electronics, Faculty of Electrical and Computer Engineering, University of Sistan and Baluchestan, Zahedan, Iran

10.22070/jce.2018.2424.1047

Abstract

In this paper, a new structure is provided for the dispersion compensating photonic crystal fibers in order to broaden the chromatic dispersion and increase the dispersion compensating capability in a wide wavelength range. In the structure, putting a combination of circular holes and a star structure in the inner core clad causes the dispersion coefficient profile to be broadened, and additionally causes the fiber to have a negative dispersion coefficient in the whole S to U telecommunication bands. In this fiber, the minimal dispersion coefficient will be -653ps/(nm.km). Furthermore, with the diameter of the circular holes of the inner clad in this structure increased, a relatively flat dispersion profile will be obtained in the whole E to U telecommunication bands with a dispersion variation equal to 46ps/(nm.km). In the S to C telecommunication bands, the dispersion variation is 17ps/(nm.km). The simulations are all done using the finite difference time domain numerical (FDTD) method.

Keywords

Chromatic dispersion

Dispersion compensation

Negative dispersion

photonic crystal fiber