نتایج جستجو برای: chromatic dispersion

تعداد نتایج: 71242  

2013
Anandita joy Agarwal Rohini Saxena

AbstractIn this paper we will study the various method of dispersion compensation in single mode fiber created because of dependence of group index to wavelength known as chromatic dispersion. Various methods of dispersion compensation are Dispersion compensation fiber (DCF) which compensates dispersion at 1310nm and 1550 nm and Fiber Bragg gratings (FBG) which compensate dispersion at waveleng...

Journal: :CoRR 2016
Gunnar Jacobsen Marisol Lidón Tianhua Xu Sergei Popov Ari T. Friberg Yimo Zhang

In this paper we present a comparative study in order to specify the influence of equalization enhanced phase noise (EEPN) for preand post-compensation of chromatic dispersion in high capacity and high constellation systems. This is – to our knowledge – the first detailed study in this area for pre-compensation systems. Our main results show that the local oscillator phase noise determines the ...

2014
Pawan Kumar Dubey Vibha Shukla

Optical fiber is one of the most important communication media in communication system. Due to its versatile nature and negligible transmission loss it is used in high speed data transmission. Dispersion in a single mode fiber is the bottleneck of long haul optical communication systems, which limits the bit rate and repeater-less distance. Chromatic dispersion (CD) of a single mode fiber (SMF)...

Journal: :Optics letters 2014
François Leo Utsav Dave Shahram Keyvaninia Bart Kuyken Gunther Roelkens

We demonstrate the measurement and tuning of second-to-fourth order dispersion of a silicon wire waveguide in a spectral region of low nonlinear losses. Using white light interferometry we extract the chromatic dispersion of our waveguide from 1950 to 2300 nm. Moreover we demonstrate tuning of the zero dispersion wavelength over more than 100 nm, pushing it to longer wavelength by partially und...

Journal: :Optics express 2011
Tianhua Xu Gunnar Jacobsen Sergei Popov Jie Li Ari T Friberg Yimo Zhang

We present a novel investigation on the enhancement of phase noise in coherent optical transmission system due to electronic chromatic dispersion compensation. Two types of equalizers, including a time domain fiber dispersion finite impulse response (FD-FIR) filter and a frequency domain blind look-up (BLU) filter are applied to mitigate the chromatic dispersion in a 112-Gbit/s polarization div...

2011
L. M. Pessoa H. M. Salgado

The electrical compensation of chromatic dispersion and polarization mode dispersion in a coherent optical system exploiting polarization multiplexing is discussed in this paper. The benefits of combining a phase estimation algorithm with a decision directed least-mean-square equalizer in a feedback configuration is reported.

2016
Chih-Ta Yen Wen-Bin Chen

Chromatic dispersion from optical fiber is the most important problem that produces temporal skews and destroys the rectangular structure of code patterns in the spectra-amplitude-coding-based optical code-division multiple-access (SAC-OCDMA) system. Thus, the balance detection scheme does not work perfectly to cancel multiple access interference (MAI) and the system performance will be degrade...

2007
A. Ferreira T. Silveira R. Ribeiro P. Monteiro M. Violas

This paper reports different strategies for electrical dispersion compensation of optical single sideband transmission systems. We investigate and compare the mitigation of the chromatic dispersion impairment using dispersive microstrip lines, Butterworth filters, and hybrid schemes employing an adaptive filter. Simulation results are presented at 10 Gbit/s, proving transmission over 600km of d...

2007
Bo Zhang Xiaoxue Zhao Louis Christen Devang Parekh Werner Hofmann Ming C. Wu Markus C. Amann Connie J. Chang-Hasnain Alan E. Willner

We demonstrate adjustable negative chirp from a directly-modulated, injection-locked 1.55-μm VCSEL by controlling the injection parameters. Chromatic dispersion tolerance is enhanced by greater than 10X at 10-Gb/s compared to that of a free-running VCSELs. ©2008 Optical Society of America OCIS codes: (230.2035) Dispersion compensation devices, (250.7260) Vertical cavity surface emitting lasers

2012
Mahesh Chand Sandhya Sharma Ravindra Kumar Sharma

We developed the theoretical and experimental method for chromatic dispersion of Borosilicate Crown microstructure optical fiber from scalar effective index method (SEIM) and TBC has been reported. To maintain the flat and zero dispersion in photonic crystal fiber (PCF) different air hole diameter has been introduced. Here we use Borosilicate Crown glass as a core material. A photonic crystal f...

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