Performance comparison of modulation formats for 40 Gbit/s DWDM transmission systems

2005 ◽  
Author(s):  
M. Daikoku ◽  
N. Yoshikane ◽  
I. Morita
Keyword(s):  
Performance Comparison ◽  
Transmission Systems ◽  
Modulation Formats

scholarly journals Performance Comparison of Differential 8-Ary Modulation Formats in High-Speed Optical Transmission Systems

2011 ◽  
Vol 29 (19) ◽  
pp. 2954-2962 ◽  
Author(s):  
Ekawit Tipsuwannakul ◽  
Pontus Johannisson ◽  
Mats Skold ◽  
Erik Agrell ◽  
Magnus Karlsson ◽  
...  
Keyword(s):  
High Speed ◽  
Optical Transmission ◽  
Performance Comparison ◽  
Transmission Systems ◽  
Modulation Formats ◽  
Optical Transmission Systems

scholarly journals Systematic Performance Comparison of (Duobinary)-PAM-2,4 Signaling under Light and Strong Opto-Electronic Bandwidth Conditions

Photonics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 81
Author(s):  
Ramón Gutiérrez-Castrejón ◽  
Md Ghulam Saber ◽  
Md Samiul Alam ◽  
Zhenping Xing ◽  
Eslam El-Fiky ◽  
...  
Keyword(s):  
Optical Networks ◽  
High Speed ◽  
Performance Comparison ◽  
Sampling Point ◽  
Bit Rate ◽  
Performance Limits ◽  
Specific System ◽  
Rate System ◽  
Modulation Formats ◽  
Modulation Format

We present a systematic comparison of PAM-2 (NRZ), Duobinary-PAM-2, PAM-4, and Duobinary-PAM-4 (duo-quaternary) signaling in the context of short-reach photonic communications systems using a Mach–Zehnder modulator as transmitter. The effect on system performance with a relaxed and constrained system’s opto-electronic bandwidth is analyzed for bit rates ranging from 20 to 116 Gb/s. In contrast to previous analyses, our approach employs the same experimental and simulation conditions for all modulation formats. Consequently, we were able to confidently determine the performance limits of each format for particular values of bit rate, system bandwidth, transmitter chirp, and fiber dispersion. We demonstrate that Duobinary-PAM-4 is a good signaling choice only for bandwidth-limited systems operating at relatively high speed. Otherwise, PAM-4 represents a more sensible choice. Moreover, our analysis put forward the existence of transition points: specific bit rate values where the BER versus bit rate curves for two different formats cross each other. They indicate the bit rate values where, for specific system conditions, switching from one modulation to another guarantees optimum performance. Their existence naturally led to the proposal of a format-selective transceiver, a component that, according to network conditions, operates with the most adequate modulation format. Since all analyzed modulations share similar implementation details, signaling switching is achieved by simply changing the sampling point and threshold count at the receiver, bringing flexibility to IM/DD-based optical networks.

Performance comparison for NRZ, RZ and CSRZ modulation formats in ultralong-haul DWDM system

2005 ◽  
Author(s):  
Weiqin Zhou ◽  
Sheping Shi ◽  
Lairong Luo ◽  
Naizhi Zhao ◽  
Guozhong Wang
Keyword(s):  
Performance Comparison ◽  
Modulation Formats ◽  
Dwdm System

Transmission Performance Comparison of 16*100 Gbps Dense Wavelength Division Multiplexed Long Haul Optical Networks at Different Advance Modulation Formats under the Influence of Nonlinear Impairments

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Farman Ali ◽  
Yousaf Khan ◽  
Shahryar Shafique Qureshi
Keyword(s):  
Optical Fiber ◽  
Optical Networks ◽  
Dispersion Compensation ◽  
Performance Comparison ◽  
Network System ◽  
Modulation Formats ◽  
Fiber Network ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Modulation Format

AbstractHigher spectral efficiency and data rate per channel are the most cost-effective approaches to meet the exponential demand of data traffic in optical fiber network communication system. In this paper, diverse modulation formats are analyzed for Dense Wavelength Division Multiplexed system at 100 Gbps * 16=1600 Gbps data rates. The performance analysis of proffered system for Non-Return to Zero, Return to Zero, Carrier- Suppressed Return to Zero and Duo binary RZ with duty cycle 0.5 to 0.7 ranges like modulation formats are considered to find optimum modulation format for a 100 Gbps bit rate per channel optical fiber transmission network system. The simulations are analyzed for different values of input power, length of fiber, nonlinear refractive index, nonlinear dispersion and nonlinear effective area for all above mentioned modulation formats with spacing 100 to 250 GHz. to evaluate the effect of modulation format Fiber Bragg Gratting, optical fiber amplifier and Dispersion Compensation Fiber dispersion compensation techniques are enacted on this proposed optical network system.

Eye Deskewing Algorithms for PAM Modulation Formats in IM-DD Transmission Systems

2017 ◽  
Author(s):  
Nebojša Stojanović ◽  
Zhang Qiang ◽  
Cristian Prodaniuc ◽  
Fotini Karinou
Keyword(s):  
Transmission Systems ◽  
Modulation Formats
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