Operation of femtosecond Kerr-lens mode-locked Cr:ZnSe lasers with different dispersion compensation methods

2012 ◽  
Vol 106 (4) ◽  
pp. 887-892 ◽  
Author(s):  
M. N. Cizmeciyan ◽  
H. Cankaya ◽  
A. Kurt ◽  
A. Sennaroglu
2015 ◽  
Vol 55 (3) ◽  
pp. 031108
Author(s):  
Tao Pu ◽  
Fanqiu Meng ◽  
Jiyong Zhao ◽  
Tao Fang ◽  
Jilin Zheng ◽  
...  

Author(s):  
RUCHI AGARWAL ◽  
VIVEKANAND MISHRA

In this paper, the implementation of subcarrier multiplexing technique is developed and investigated with pre-, post- and symmetrical-dispersion compensation methods for 10 Gb/s non-return to zero (NRZ) links using standard and dispersion compensated fibers through computer simulations to optimize high data rate optical transmission. Mathematical analysis is done to evaluate performance in term of bit error rate. Simulation is done using Optisys Software version 10.0. Motivation to this research is to compare all three compensation methods and it is found that the symmetrical compensation method is superior to pre- and post-compensation methods. On comparing pre- and post-compensation methods, it is found that the later is superior to the former. A 10-Gb/s SCM test bed has been set up in which 4 * 2.5 Gb/s data streams are combined into one wavelength that occupies a 20-GHz optical bandwidth. Thus by using these comparisions one can get a promising system to the symmetric high capacity access network with high spectral efficiency, cost effective, good flexibility.


2017 ◽  
Vol 54 (6) ◽  
pp. 65-75 ◽  
Author(s):  
A. Alsevska ◽  
V. Dilendorfs ◽  
S. Spolitis ◽  
Vj. Bobrovs

Abstract In the paper, the authors compare efficiency of two physical dispersion compensation methods for single channel and 8-channel WDM fibre-optical transmission systems using return-to-zero (RZ) and non-return-to-zero (NRZ) line codes for operation within optical C-band frequencies by means of computer simulations. As one of the most important destructive effects in fibre optical transmission systems (FOTS) is chromatic dispersion (CD), it is very important to reduce its negative effect on a transmitted signal. Dispersion compensation methods that were implemented in the research were dispersion compensating fibre (DCF) and fibre Bragg grating (FBG). The main goal of the paper was to find out which dispersion compensation method (DCF or FBG) provided the highest performance increase for fibre-optical transmission system and provided the longest transmission distance after dispersion compensation was implemented at different locations in the fibre-optical line while RZ or NRZ line codes were used. In the paper the reference point of signal quality for all measurements, which were obtained at the receiver, was BER<10−12.


2006 ◽  
Author(s):  
Qiang Gong ◽  
Jingying Jiang ◽  
Ruikang K. Wang ◽  
Fan Zhang ◽  
Jianquan Yao

Author(s):  
Md. Bipul Hossain ◽  
Apurba Adhikary ◽  
Tanvir Zaman Khan

In optical fiber Communication system dispersion compensation has become one of the major topics of importance and research nowadays. This is because any presence of dispersion might leads to pulse spreading which might cause inters symbolic interference (ISI) and which leads to signal degradation. In this paper six different model are considered for dispersion compensation. Dispersion compensation fiber (DCF) is used to design first three models by using its three different configurations of pre-compensation, post-compensation, symmetrical compensation and Fiber Bragg Gratings (FBG), uniform FBG, IDCFBG are used for designing rest of three dispersion compensation models. Single channel optical system length of 100 km with data rate of 2.5 Gbps and 10 Gbps is used to design each model and is simulated by using optisystem software package. All the designs are compared with respect to the quality factor (Q-factor) and bit error rate (BER). With the outcome of the simulations results it is seen that post–compensation DCF model is the promising approach.


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