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Mohd Rashidi Che Beson
Preferred name
Mohd Rashidi Che Beson
Official Name
Mohd Rashidi , Che Beson
Alternative Name
Rashidi, C. B.M.
Beson, Mohd Rashidi Che
Che Beson, Mohd Rashidi
Rashidi, Che Beson Mohd
M. Rashidi, C. B.
Main Affiliation
Scopus Author ID
36549138700
Researcher ID
AAQ-2496-2020
Now showing
1 - 8 of 8
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PublicationHybrid WDM and Optical-CDMA over Multi-Mode Fiber Transmission System based on Optical Vortex( 2021-03-01)
;Ghazi A. ; ; ; ; ;Ali N. ;A.dawoodi ;Fakhrudeen A.M. ;Fareed A.Sharma T.The optical vortex has recently attracted scholars to implement it in optical tweezers, microscopy, optical communications, quantum information processing, optical trapping, and laser machining. Optical vortex beam applied classically that can be transferred to the transverse amplitude of a heralded single-photon, and optical vortex possesses a helical wavefront and carries orbital angular momentum. In this study, Optical vortex is applied in optical-CDMA (optical code-division multiple-access) in conjunction with WDM (wavelength division multiplexing). This mechanism aims to increase the capacity and security in optical communication significantly. The implementation of Laguerre-Gaussian (LG) modes with optical vortex based on one dimension zero cross-correlation (ZCC) code shows that mode coupling reduces effectively. Consequently, a positive increase in channel performance and response. Accordingly, the LG modes based on the 1D-ZCC code are investigated and propagated over multi-mode fiber (MMF) based on an optical vortex, which also substantially reduces channel effects. Consequently, all these attributes combined will result in a hybrid WDM-Optical-CDMA with an optical vortex system over MMF. -
PublicationComparison of MD & ZCC one dimension code for optical-cdma over multi-mode fiber based on laguerre-gaussian modes( 2021-08-01)
;Ghazi A. ; ; ;Fareed A. ;Hamood L. ; ;Ali N. ; ;Fakhrudeen A.M. ;Al-Dawoodi A. ;Matem R.Abdullah S.S.This paper compares multi diagonal (MD) and zero cross-correlation (ZCC) onedimension codes for optical code division multiple access (Optical-CDMA). In our system, Laguerre-Gaussian modes over a multi-mode fiber (MMF) transmission system based on two different codes have been proposed. Computer simulation software (Opti-system) is used to design the system in a short-haul local-area network (LAN) to evaluate high-capacity optical data links. In the design, the data is transmitted via Spatial vertical-cavity surface-emitting laser (on Spatial VCSEL) with a 1550 nm wavelength. The adopted Laguerre- Gaussian modes are (LG 0 3, LG 02 and LG 01). Over different distances, we evaluate our system by conducting several simulation experiments to measure the parameters: Bit error rates, Q-Factor and eye diagrams. -
PublicationA Systematic review of Multi-Mode Fiber based on Dimensional Code in Optical-CDMA( 2021-04-07)
;Ghazi A. ; ; ; ;Daw. a ;Mahmood B.A. ;Fareed A. ;Zaenal M.U. ;Qasim N.H.Rafeeq R.M.This paper deals with optical code division multiple access (optical-CDMA) and provides a general analysis of multi-mode fiber (MMF). The purpose of this work is to classify the works in the literature that are related to Optical-CDMA based on MMF and to find the limitation of the researches done in this field. Several challenges that occur in the medium such as multiple-access interference (MAI), pulse dispersion (PD) and nonlinearity in optical fibers deteriorate system performances and become a major performance-limiting factor. -
PublicationComparison of Laguerre-Gaussian and Hermite-Gaussian Modes for Optical-CDMA over Multi-Mode Fiber( 2020-03-20)
;Ghazi A. ; ; ;Fareed A. ;A.DawoodOptical fiber became essential in telecommunication networks long-distance data transmissions because of its great features such as large bandwidth and long transmission distance. However different profile mode in the optical fiber communication system has different features that provide better results through Multi-mode fiber (MMF). This paper proposes a comparison of different modes for optical code division multiple access (Optical-CDMA) based on one dimension zero cross-correlation (ZCC) code over multi-mode fiber (MMF) transmission system for short haul-local area network. Furthermore Optical-CDMA system transmitted data based on Spatial VCSEL that operate over wavelength 1550 nm. The system is carried out by using three Laguerre-Gaussian modes (LG 01 LG 02 and LG 0 3) and compare with three Hermite-Gaussian modes (HG 01 HG 02 and HG 0 3) based on 1D-ZCC codes. Over different distance comparison of different modes in Optical-CDMA has evaluated the performance based on eye diagrams bit-error rates (BER) and Q-Factor measurement. The findings show that the proposed system demonstrates good performance over more distance MMF based on Laguerre-Gaussian modes. -
PublicationPerformance Analysis of ZCC-Optical-CDMA over SMF for Fiber-To-The-Home Access Network( 2020-06-17)
;Ghazi A. ; ;Fareed A. ; ; ;Albayaty M. ;A.dawoodiFakhrudeen A.M.To provide a sustainable fiber-to-the-home (FTTH), several multiplexing techniques have been developed for this purpose. The correlation features are the main obstacle behind the network performance limitation, which imposes to a high level of multiple access interference. However, the development of multiplexing techniques helps to overcome these limitations, such as optical-code division multiple access (Optical-CDMA). Optical-CDMA is considered as one of the most powerful solutions for FTTH. This paper aims to enhance FTTH network performance by applying Zero cross-correlation code (ZCC) with Optical-CDMA with maximum link single-mode fiber. In the simulation, the system performance is demonstrated in terms of bit error rate, Q-Factor and eye diagram measurements.11 1 -
PublicationComparison of Laguerre-Gaussian, Hermite-Gaussian and linearly polarized modes in SDM over FMF with electrical nonlinear equalizer( 2020-01-08)
;Fareed A. ;Ghazi A. ;Al-Dawoodi A. ; ; ; ;Amphawan A. ;Fakhrudeen A.M.Fadhel I.E.I.The development of communication technologies shows that fiber optics is in the main communication improvement in the last decade. Fiber optics is moved from laboratory to be a reality. Transmission of the data using the light as a signal carrier is a revolutionary improvement in the communication era. However, to enable this technology several obstacles should be addressed, such as achieving the longest distance transmission with less possible bit error rate (BER). One of the solutions was performed by careful selection of the optical modes profiles with the help of the nonlinear electrical equalizer (NLEE) to solve the problem of the mode coupling. This paper investigates on the compensation of different modes profiles in optical communication systems over few-mode fiber (FMF) based on Space Division Multiplexer (SDM) with an electrical non-linear equalizer utilized to equalize nonlinear distortions. The result shows that the LG mode achieved the best transmission distance comparing to the other modes which make it the best option to be used. Basically, the evaluation of the system has been done based on standard evaluation metrics such as BER and Eye Diagram. These results can optimize the data transmission quality.13 1 -
PublicationSpiral-Phased Laguerre-Gaussian Modes Generation in SWDM over Few Mode Fiber based on Electrical Equalization( 2020-06-17)
;Ghazi A. ;Fareed A. ;Masunda T. ; ; ;Amphawan A. ;Al-Dawoodiiii e ;Fadhel I.E.I.Space division multiplexing, in conjunction with wavelength division multiplexing, is a powerful mechanism that increases spatial channels significantly in a single optical fiber. Spiral Phased-Laguerre-Gaussian (SP-LG) modes indicate that they effectively reduce mode coupling, thereby increasing the channel response and performance positively. However, mode-coupling influence optical fiber system leads to inter-symbol interference (ISI) between the channels and reduces both capacity and distance. In this paper, we apply the SP-LG modes in a space wavelength division multiplexing over a few-mode fiber system. The results demonstrate significant improvements in reducing channels effects and ISI. The performance evaluations are based on the bit-error-rate (BER), eye diagram and spectrum analyzer.2 21 -
PublicationHybrid Dy-NFIS & RLS equalization for ZCC code in optical-CDMA over multi-mode optical fiber( 2021-01-01)
;Ghazi A. ; ; ;Fareed A. ;Al-dawoodi A. ; ; ;Ali N. ;Mohsin A.H.Abdullah S.S.For long haul coherent optical fiber communication systems, it is significant to precisely monitor the quality of transmission links and optical signals. The channel capacity beyond Shannon limit of Single-mode optical fiber (SMOF) is achieved with the help of Multi-mode optical fiber (MMOF), where the signal is multiplexed in different spatial modes. To increase single-mode transmission capacity and to avoid a foreseen “capacity crunch”, researchers have been motivated to employ MMOF as an alternative. Furthermore, different multiplexing techniques could be applied in MMOF to improve the communication system. One of these techniques is the Optical Code Division Multiple Access (Optical-CDMA), which simplifies and decentralizes network controls to improve spectral efficiency and information security increasing flexibility in bandwidth granularity. This technique also allows synchronous and simultaneous transmission medium to be shared by many users. However, during the propagation of the data over the MMOF based on Optical-CDMA, an inevitable encountered issue is pulse dispersion, nonlinearity and MAI due to mode coupling. Moreover, pulse dispersion, nonlinearity and MAI are significant aspects for the evaluation of the performance of high-speed MMOF communication systems based on Optical-CDMA. This work suggests a hybrid algorithm based on nonlinear algorithm (Dynamic evolving neural fuzzy inference (Dy-NFIS)) and linear algorithm (Recursive least squares (RLS)) equalization for ZCC code in Optical-CDMA over MMOF. Root mean squared error (RMSE), mean squared error (MSE) and Structural Similarity index (SSIM) are used to measure performance results.23 3