Suppression of chromatic dispersion effects using SOA in analog optical transmission link

2002 ◽  
Author(s):  
Hyun-Do Jung ◽  
Sang-Yoon Lee ◽  
Sang-Kook Han
Keyword(s):  
Optical Transmission ◽  
Chromatic Dispersion ◽  
Dispersion Effects ◽  
Transmission Link

Robust, signed, online chromatic dispersion detection in a 40-Gbit/s optical transmission link

2003 ◽  
Vol 85 (1) ◽  
pp. 41-44 ◽  
Author(s):  
D. Sandel ◽  
V. Mirvoda ◽  
F. Wüst ◽  
R. Noé
Keyword(s):  
Optical Transmission ◽  
Chromatic Dispersion ◽  
Transmission Link

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.

Fiber nonlinearity compensation using optical phase conjugation in dispersion-managed coherent transmission systems

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jinqing Hao ◽  
Bingchen Han
Keyword(s):  
Performance Improvement ◽  
System Performance ◽  
Optical Transmission ◽  
Phase Conjugation ◽  
Fiber Amplifiers ◽  
Transmission Systems ◽  
Fiber Nonlinearity ◽  
Erbium Doped ◽  
Significant Performance ◽  
Transmission Link

Abstract In the discretely amplified transmission systems with erbium-doped fiber amplifiers, the system performance of nonlinearity-compensated optical transmission based on pre-dispersed spectral inversion (PSI) is investigated numerically. We find that PSI offers more significant performance improvement in dispersion-managed (DM) links than that in non-dispersion-managed (noDM) links. On the other hand, the DM link is more sensitive to the span offset from the center of the transmission link than noDM link. The performance difference between DM and noDM links is 1 dB if the span offset equals four spans in 20 × 90 km nonlinear transmission. Furthermore, we show that for the dispersion-managed transmission, in order to obtain the best system performance, the amount of pre-dispersion of the PSI, should be optimized over different dispersion maps.

Study of the Correction of Effects Chromatic Dispersion and Attenuation to Evaluate the Optical Transmission

2020 ◽  
Vol 41 (2) ◽  
pp. 209-214
Author(s):  
Saliha Kheris ◽  
Badra Bouabdallah
Keyword(s):  
Optical Transmission ◽  
Signal To Noise Ratio ◽  
Chromatic Dispersion ◽  
Optical Amplifier ◽  
Laser Source ◽  
Long Distance ◽  
Optical Components ◽  
Optical Detector ◽  
Fiber Optical ◽  
Dispersion And Attenuation

AbstractIn this paper, we have presented a global study of simple bonds, focusing on the main limitations introduced by different optical components as laser source, fiber, optical amplifier, and optical detector. The construction of a long-distance link requires the compensation of attenuation and chromatic dispersion phenomena. Thus, it is well known that the attenuations cause the drop of the signal intensity, whereas the pulse spreading, due to the dispersion, causes the increase of the Bit Error Rate (BER) and consequently the reduction of the signal to noise ratio (SNR). In this purpose, we have calculated the quality factor (Q) issues from the noisy signal’s simulations. We have found a Q of 7.02 to a BER of 0.8 e−12. The founding results match well with fixes norms in telecommunication field.

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