نتایج جستجو برای: chromatic dispersion

تعداد نتایج: 71242  

2013
Vijay K. Mehra

This paper solves the Non Linear Schrodinger Equation using the Split Step Fourier method for modeling an optical fiber. The model generates a complex wave of optical pulses and using the results obtained two graphs namely Loss versus Wavelength and Dispersion versus Wavelength are generated. Taking Chromatic Dispersion and Polarization Mode Dispersion losses into account, the graphs generated ...

2006
Yuh-Sien Sun Chau Yuan-Fong Tsai Din-Ping

The two dimensional with a triangular-lattice cross sectional pattern of elliptic air holes photonic crystal fiber (PCF) is investigated in detail by use of plan wave expansion (PWE) method. Using PWE method, the dependence of dispersion on structure parameters is calculated. We compared the dispersion relations between the circular air holes PCF and the elliptic one. We find that the flatter d...

2008
A. Rostami S. Makouei

In this paper, we design the zero-dispersion wavelength shifted fiber based on the WII-type triple clad single mode optical fiber and consider the transmission parameters fluctuations owing to environmental conditions such as temperature variations on dispersion behavior of fiber. In order to estimate the thermal coefficients, the model introduced by Ghosh [1] is applied. Our calculation show t...

2013
Md Abul Hossain

58 Abstract— In this paper the performance of optical fiber communication system is analytically investigated on account of fiber chromatic and polarization mode dispersion employing OFDM-QAM. The influence of the dispersions on the signal spectrum is determined as a function of fiber length, Bit rate and dispersion parameters for intensity modulation/ direct-direct (IM/DD) receiver. It is foun...

Journal: :The Physics Teacher 2022

The refractive index (RI) is probably the single most important parameter in optical systems. Chromatic dispersion, on other hand, indicates how RI depends wavelength and central in, e.g., communication dispersion also plays an role when teaching optics due to captivating natural phenomenon of rainbow white light decomposition with a prism. In this work, we propose explore method characterize t...

2004
K Thyagarajan

Optical amplifiers and dispersion compensators form important components of any DWDM system and the overall performance of the system depends critically on the spectral properties of these and other components in the link. This has led to the development of optical amplifiers and fiber based dispersion compensators with specific wavelength dependent characteristics. Dual concentric core fibers ...

2009
M. Pourmahyabadi 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, threedimensional hybrid guided modes can be calculated by usi...

2017
Daniel Fojo

A study of chromatic dispersion (CD) in optical fibers, its effects on signal propagation, the devices to compensate it and the methods for its characterization. We have presented the experimental setups for the most popular frequency domain methods for CD measurement, Peucheret and Modulation Phase Shift Method (MPSM), as well as for an advanced method with improved performance, the Asymmetric...

2008
M. Fontana I. D. R. Machado D. Guimarães

In this paper, we propose a Computer Aided Design (CAD) tool so called HiperionCAD, which allows the design and optimization of Time-Division Multiplexing (TDM) and Wavelength-Division Multiplexing (WDM) optical networks. The tool has been developed by means of the Model-Driven Development (MDD) approach. The HiperionCAD software allows the network visual design and the following computations: ...

2000
Tomohiro OTANI Toshio KAWAZAWA

The wavelength demultiplexer, using cascaded optical fiber gratings and circulators, was proposed and developed for application to optically amplified wavelength-division multiplexing (WDM) submarine cable systems with 100GHz channel spacing. Our proposed demultiplexer cannot only achieve high wavelength selectivity, small excess loss and effective allocation of dispersion compensation fibers f...

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