نتایج جستجو برای: chromatic dispersion

تعداد نتایج: 71242  

2017
Pragya Mishra

This paper review of the chromatic dispersion compensation in optical fiber communication system. In optical communication system to compensate dispersion Fiber Bragg grating (FBG) is one amongst the applicable and necessary components. During this the appliance of chirped FBG was studied as a dispersion compensator in optical communication systems. This paper studied the various types of simul...

2012
Michal Lucki

The use of Photonic Crystal Fibers (PCF) is understood within their unique chromatic dispersion characteristics and nonlinear behavior, which is suitable for dispersion compensation or transmission of information without pulse spreading, leading to an intersymbol interference. Pulse spreading being the result of chromatic dispersion in optical fibers is considered as one of the critical issues ...

2015
S. Olyaee M. Seifouri A. Nikoosohbat

Photonic Crystal Fibers (PCFs) can be used in optical communications as transmission lines. For this reason, the PCFs with low confinement loss, low chromatic dispersion, and low nonlinear effects are highly suitable transmission media. In this paper, we introduce a new design of index-guiding nanostructured photonic crystal fiber (IG-NPCF) with ultra-low chromatic dispersion, low nonlinearity ...

Journal: :Optics express 2011
A Fraine D S Simon O Minaeva R Egorov A V Sergienko

The use of quantum correlations between photons to separate measure even- and odd-order components of polarization mode dispersion (PMD) and chromatic dispersion in discrete optical elements is investigated. Two types of apparatus are discussed which use coincidence counting of entangled photon pairs to allow sub-femtosecond resolution for measurement of both PMD and chromatic dispersion. Group...

2007
Huseyin Ademgil Shyqyri Haxha

Photonic crystal fibre (PCF)s with zero chromatic dispersion at the telecommunication wavelength is reported. The PCF design parameters, such as the effects of air holes and structural design parameters on the effective index, effective mode area, confinement losses and chromatic dispersion, have been carefully investigated by using the full vectorial finite element method. It is demonstrated t...

M. Pourmahyabadi, Sh. Mohammad Nejad,

In this article, perfectly matched layer (PML) for the boundary treatment and an efficient compact two dimensional finite-difference frequency-domain (2-D FDFD) method were combined to model photonic crystal fibers (PCF). For photonic crystal fibers, if we assume that the propagation constant along the propagation direction is fixed, three-dimensional hybrid guided modes can be calculated by us...

2008
P. PETERKA J. KAŇKA P. HONZÁTKO D. KÁČIK

We present a modification of the interferometric method for the measurement of optical fiber chromatic dispersion using an easily aligned, almost all-fiber Michelson interferometer. Particular issues of the microstructure fiber characterization are discussed. Accuracy of the method is validated by comparing the chromatic dispersion measurement of the standard single-mode fiber with results obta...

Journal: :Optics express 2010
Tianhua Xu Gunnar Jacobsen Sergei Popov Jie Li Evgeny Vanin Ke Wang Ari T Friberg Yimo Zhang

We present a comparative analysis of three popular digital filters for chromatic dispersion compensation: a time-domain least mean square adaptive filter, a time-domain fiber dispersion finite impulse response filter, and a frequency-domain blind look-up filter. The filters are applied to equalize the chromatic dispersion in a 112-Gbit/s non-return-to-zero polarization division multiplexed quad...

Journal: :Applied optics 2007
Harish Subbaraman Tao Ling YongQiang Jiang Maggie Y Chen Peiyan Cao Ray T Chen

A highly dispersive dual-concentric-core pure silica photonic crystal fiber is designed with a maximum chromatic dispersion value of about -9500 ps/(nm km) around the 1.56 microm wavelength region and a full width at half-maximum (FWHM) of 55 nm. The change in the dispersion-bandwidth product as a function of period is carefully studied by using the plane wave expansion method. The coupled mode...

2005
S. L. Jansen D. van den Borne P. M. Krummrich G - D Khoe H. de Waardt

The performance of DWDM 2x10.7Gbit/s-DQPSK is assessed comparing mid-link optical phase conjugation (OPC) and DCF for dispersion compensation. We report a 44%-increase in transmission distance resulting from nonlinear phase noise reduction by using mid-link OPC. Introduction Mid-link optical phase conjugation (OPC) is an attractive method for replacing chromatic dispersion compensating fiber (D...

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