Tunable dispersion compensation experiment in 5.94-Tb/s WDM transmission system

2005 ◽  
Author(s):  
Hongbin Zhang ◽  
A. Fauzi Abas ◽  
Ariya Hidayat ◽  
David Sandel ◽  
Suhas Bhandare ◽  
...  
Keyword(s):  
Dispersion Compensation ◽  
Transmission System ◽  
Wdm Transmission

scholarly journals Comparison of Different Modulation Formats and their Compatibility with WDM Transmission System

2008 ◽  
Vol 45 (2) ◽  
pp. 3-16
Author(s):  
V. Bobrovs ◽  
G. Ivanovs
Keyword(s):  
Wavelength Division Multiplexing ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
Polarization Mode Dispersion ◽  
Transmission System ◽  
Simulation Software ◽  
Wdm Networks ◽  
Modulation Formats ◽  
Differential Phase Shift ◽  
Wdm Transmission

Comparison of Different Modulation Formats and their Compatibility with WDM Transmission SystemIn the work, the intensity and phase modulation methods are compared for different versions of the wavelength division multiplexing (WDM) system. Binary and multilevel code formats are evaluated numerically, with OptSim simulation software at the bit rate of 10 and 40 Gbit/s, using long-fiber spans and dispersion compensation technique. The problems to be overcome at exploitation of multiterabit WDM systems based on 40 Gbit/s optical transmissions are: chromatic dispersion (CD), polarization-mode dispersion (PMD), dispersion slope, and nonlinear effects of the transmission line. We have investigated the potentialities of modulation formats for 40 Gbit/s WDM networks where most of the listed problems are avoided. It is shown that Duobinary and differential phase shift keying (DPSK) modulation formats are perfectly suitable for ultra-high spectral efficient WDM systems and possess high resistance to dispersion and nonlinear optical effects (NOE).

Automatic polarisation mode dispersion compensation in 40 Gbit/s optical transmission system

1998 ◽  
Vol 34 (23) ◽  
pp. 2258 ◽  
Author(s):  
D. Sandel ◽  
M. Yoshida-Dierolf ◽  
R. Noé ◽  
A. Schöpflin ◽  
E. Gottwald ◽  
...  
Keyword(s):  
Optical Transmission ◽  
Dispersion Compensation ◽  
Transmission System ◽  
Mode Dispersion ◽  
Polarisation Mode Dispersion

scholarly journals Performance Analysis of Subcarrier Multiplexed Optical Transmission System for QPSK Data

2020 ◽  
Vol 9 (2) ◽  
pp. 466-476
Keyword(s):  
Optical Transmission ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
Transmission System ◽  
Laser Source ◽  
Radio Link ◽  
Link Distance ◽  
Performance Results ◽  
The Impact ◽  
Dispersion And Attenuation

This paper focuses on the impact of different parameters on the performance of the Subcarrier Multiplexed Optical Transmission System for the application on radio link via optical fiber. Performance results are evaluated for QPSK data format for ODSB and OSSB modulation of Microwave subcarriers with digital NRZ coded random data patterns. The four subsystems of QPSK modulators are at 400, 500, 600, 700 MHz subcarrier frequencies with frequency spacing of 100 MHz. The power of subcarriers is decreasing with increasing the link distance due to dispersion and attenuation. By using dispersion compensation fiber, the link distance has been enhanced from 100 km to 240 km successfully. The impact of chromatic dispersion has been reduced in OSSB by using dual-electrode MZM. The constellation diagram also confirms that the phase of the signal after traveling through the link is changing due to dispersion. The phase is the same for subcarrier 600 MHz & 700 MHz for ODSB and OSSB in QPSK SCM. The impact of linewidth and responsivity on SNR has also analyzed to evaluate the performance. It is concluded that the maximum SNR is decreasing with increase in the linewidth of laser source and increasing with the increase in responsivity of PIN diode for the same fiber length in SCM transmission.

EDFA transient response to channel loss in WDM transmission system

1997 ◽  
Vol 9 (3) ◽  
pp. 386-388 ◽  
Author(s):  
A.K. Srivastava ◽  
Y. Sun ◽  
J.L. Zyskind ◽  
J.W. Sulhoff
Keyword(s):  
Transient Response ◽  
Transmission System ◽  
Channel Loss ◽  
Wdm Transmission

1.28 terabit/s (32x40 Gbit/s) wdm transmission system for free space optical communications

2009 ◽  
Vol 27 (9) ◽  
pp. 1639-1645 ◽  
Author(s):  
E. Ciaramella ◽  
Y. Arimoto ◽  
G. Contestabile ◽  
M. Presi ◽  
A. D'Errico ◽  
...  
Keyword(s):  
Optical Communications ◽  
Free Space ◽  
Transmission System ◽  
Free Space Optical ◽  
Wdm Transmission
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