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.

Impact of polarisation mode dispersion on the statistics of Q factor in optical transmission systems

2000 ◽  
Vol 36 (16) ◽  
pp. 1400 ◽  
Author(s):  
D. Beltrame ◽  
F. Matera ◽  
M. Settembre ◽  
A. Galtarossa ◽  
A. Pizzinat ◽  
...  
Keyword(s):  
Optical Transmission ◽  
Q Factor ◽  
Transmission Systems ◽  
Mode Dispersion ◽  
Optical Transmission Systems ◽  
Polarisation Mode Dispersion

scholarly journals Chromatic Dispersion Compensation Effect Performance Enhancements Using FBG and EDFA-Wavelength Division Multiplexing Optical Transmission System

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Mounia Chakkour ◽  
Otman Aghzout ◽  
Badiaa Ait Ahmed ◽  
Fahd Chaoui ◽  
Mounir El Yakhloufi
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Transmission ◽  
Noise Figure ◽  
Dispersion Compensation ◽  
Chromatic Dispersion ◽  
Transmission System ◽  
Complex Model ◽  
Design Parameters ◽  
Optimized Design ◽  
Erbium Doped Fiber Amplifier

An optical transmission system using Fiber Bragg Grating (FBG) and Erbium Doped Fiber Amplifier (EDFA) with new proposed model has been analyzed to overcome chromatic dispersion and attenuation phenomena. To evaluate the transmission system performance of the received signals, a simple model of one channel transmission has been developed in the first step. Also, optical fiber length and attenuation coefficient parameters have been investigated in detail to deal with the optimized corresponding parameter values. Results show that the performance of the optimized design parameters is very efficient in terms of output power (dBm), noise figure (dB), gain (dB), and Q-Factor. The model of one channel developed previously has been adapted to a complex model of four optical channels multiplexing with different wavelengths. FBG and EDFA have been also added to WDM technology system to enhance the chromatic dispersion and the signal attenuation. Results show that the new model is more efficient in terms of Q-Factor and eye diagrams.

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