scholarly journals CHROMATIC DISPERSION COMPENSATION IN EXISTING FIBER OPTIC TELECOMMUNICATION LINES WITH THE GROWING BIT RATES NEEDS OF DWDM SYSTEM

2021 ◽  
Vol 11 (4) ◽  
pp. 38-41
Author(s):  
Tomasz Bobruk
Keyword(s):  
Fiber Optic ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
Dwdm System

The article presents an analysis of the methods of chromatic dispersion compensation in the existing, already built fiber optic telecommunications lines, based on ITU G.652 A and B fibers with the constantly growing demand for bit rates in DWDM systems. Due to the enormous investment costs, it is impossible to replace the cables used with NZDSF, hence the chapter analyzes methods of improving the bandwidth without replacing all cables. Typical models of the optimization of chromatic dispersion in the existing lines are presented.

Performance Enhancement of Ultra High Capacity 2.5 Tbps DWDM System Using DCF and Optimized Modulation Format

2017 ◽  
Vol 39 (1) ◽  
Author(s):  
Sooraj Parkash
Keyword(s):  
Performance Enhancement ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
High Capacity ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Modulation Formats ◽  
Modulation Format ◽  
Point To Point ◽  
Dwdm System

AbstractThis paper successfully demonstrate point-to-point (P2P) 2.5 TB/s DWDM system in downstream for 100 wavelengths having 0.4 nm (50 GHz) channel spacing by using post-dispersion compensation scheme. Each channel is transmitting 25 GB/s data rate in down link. A 20 km dispersion compensating fiber (DCF) followed by 80 km standard single mode fiber (SSMF) which passes 20 times through fiber span for compensating the chromatic dispersion. The maximum reach of designed system is (100×20) 2,000 km. In this paper we also performed the comparison of different modulation formats such as NRZ, RZ and CRZ. It has been observed that CRZ modulation format can achieve BER as better as e

Chromatic Dispersion Compensation of OOK Signals With MLSE Utilizing Diverse VSB Filtering

2008 ◽  
Vol 20 (23) ◽  
pp. 1893-1895 ◽  
Author(s):  
Ming Li ◽  
Fan Zhang ◽  
Zhangyuan Chen ◽  
Anshi Xu
Keyword(s):  
Dispersion Compensation ◽  
Chromatic Dispersion

Optical OFDM for Downstream Transmission in Long-Reach PON

2014 ◽  
Vol 631-632 ◽  
pp. 860-863 ◽  
Author(s):  
Xiao Xue Gong ◽  
Hui Li ◽  
Peng Chao Han ◽  
Yu Fang Zhou
Keyword(s):  
Orthogonal Frequency Division Multiplexing ◽  
Direct Detection ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
Optical Network ◽  
Digital Signal ◽  
Least Square ◽  
Passive Optical Network ◽  
Spectrum Efficiency ◽  
Flexible Resource

Orthogonal Frequency Division Multiplexing (OFDM) has gained great attention in the next generation Long-Reach Passive Optical Network (LR-PON) due to its high spectrum efficiency, flexible resource allocation and natural compatibility with Digital Signal Processing (DSP)-based implementation. In this paper, we propose and demonstrate a 40Gbit/s direct-detection long reach OFDM-PON system for downstream transmission over 100km standard signal mode fiber (SSMF). By using a simple Least Square (LS) method for the channel estimation, our proposed system achieves high bit rate without the need for chromatic dispersion compensation.

Efficient Chromatic Dispersion Compensation and Carrier Phase Tracking for Optical Fiber FBMC/OQAM Systems

2017 ◽  
Vol 35 (14) ◽  
pp. 2909-2916 ◽  
Author(s):  
Trung-Hien Nguyen ◽  
Francois Rottenberg ◽  
Simon-Pierre Gorza ◽  
Jerome Louveaux ◽  
Francois Horlin
Keyword(s):  
Optical Fiber ◽  
Carrier Phase ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
Phase Tracking ◽  
Carrier Phase Tracking
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