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Search Results: 1 - 10 of 626186 matches for " M.S. Ab-Rahman "
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Analysis of Components Failure, Malfunction Effect and Prevention Technique in Customer Access Network FTTH-PON
M.S. Ab-Rahman,M. Tanra,S.C. Rosli Boonchuan Ng,Aida Baharudin
Journal of Applied Sciences , 2011,
Abstract: Preventive maintenance is regular maintenance which is designed to prevent the need for more costly restoration. Two major approaches for PM are time-based and condition-based maintenance. In contrast, the maintenance can be effective and more efficient type of maintenance than time-based maintenance. However, Irrespective of the approaching adopted for PM, whether a failure can be discovered early or even predicted is the significant point. Towards this objective, this study investigates the malfunctions in Fiber-to-the Home (FTTH) network in passive architecture (PON). Five important elements had been selected and identified that contribute to the system failure as the paper starting point. Critical hazard that affects the human is also highlighted. Finally we proposed four methods that can be applied to minimize the hazard by good monitoring, fast failure monitoring, effective restoration scheme and efficient maintenance by means our proposed solution such as MADS, SANTAD,CTU, OXADM and PIM. This include also caution should be taken when managing, controlling and applying activities in the fiber network. Although, the PON is the cost-efficient solution for high speed data communication but the adjustment is still needed for the safety and survivability insurance.
Ideal and non Ideal Condition Analysis based on Protection Scheme in Distribution Fiber for Immediate Split Ftth-pon
M.S. Ab-Rahman,S.A.C. Aziz,K. Jumari
Journal of Applied Sciences , 2011,
Abstract: Fiber-to-the Home (FTTH) network security has become a very essential and important topic for optical network. Fault isolation became important issues in order to provide an efficient FTTH network and simultaneously will provide continuous services to the end user without being interrupted by any failure in fiber line. In this study we discussed about the analysis for restoration scheme proposed in order to proof the system feasibility in our network survivability. Restoration scheme against the failure in distribution fiber line has been proposed. In this study, we implement a protection scheme for a novel tree-based for Intermediate Split Structure (ISS) in the drop region section. The protection mechanism will have capability to divert the signal onto protection line according to the types of failure condition and location of failures in access network. Method of analysis is discussed in two different ways, which are in ideal condition analysis and non-ideal analysis. Under ideal analysis it is involved in simulation approach according to proposed restoration scheme design. The system performance was investigated through the most common test on high-speed digital communications components and system that include the eye diagram, jitter, Q factor and bit error rate measurement. While under the non-ideal analysis it has been discussed about the power penalty analysis for optical switch cascaded in our network protection design according to the types of failure conditions.
Engineering Installation Works on FTTH-PON Laboratory Test Bed: Case Study
M.S. Ab-Rahman,B.C. Ng,R. Kasimin,K. Jumari
Journal of Applied Sciences , 2010,
Abstract: This study introduces a low cost technique for testing and monitoring process that can be applied specifically for Fiber-to-the-Home Passive Optical Network (FTTH-PON). The simplest and low cost method would be using a Optical Power Meter (OPM) which is able to detect the total loss on the network. However, to identify faulty sections of a network, segmentation need to be done together with the optical power meter. Another testing and troubleshooting method would be using the Optical Time-Domain Reflectometer (OTDR). The OTDR within the network is able to detect the component that causes losses in the network. However, elements acting as a power splitter are not being able to be detected by the OTDR. Therefore, the Access Control System (ACS) is developed to bypass those elements and allows the use of OTDR entirely. This method is proven to be a faster method than the first. Additionally, it can be upgraded to monitor the line status by accumulate all the result in one display computer screen. But this mechanism is not interested to be discussed detail in this study. The new configuration of FTTH is named as modified FTTH. In the end, we compare the installation cost between the conventional and modified FTTH for different network size according to number of users.
Passive Optical Signal Tapping Device
M.S. Ab-Rahman,B.C. Ng,R. Ismail
Journal of Applied Sciences , 2009,
Abstract: A fully passive optical signal tapping device named Passive In-line Monitoring (PIM) device is developed to provide and increase the monitoring and maintenance capabilities of Fiber-To-The-Home (FTTH). This device will be permanently installed with the FTTH trunk lines to tap out a small ratio of triple-play signals for monitoring appliance without affecting the service transmission. The PIM device optically splits the full-duplex signals into two portions; 98% maintains in the transmission link, while the other 2% is simultaneously connects to a portable tester unit for identifying the signal presence and direction. Such features also allow the network operators to maintain and operate their network more cost-effectively and offer the end-users with an improved survivability and reliability network, which is continuously monitored 24 h a day and 7 days a week. A PIM device prototype had been successfully developed in this study and implemented in FTTH. The experimental results show the parameters of PIM device are operating wavelength 1310 /1480/1550 nm, operating bandwidth±15 nm, insertion loss≤1.5 dB, return loss≥35 dB and directionality≥55 dB.
Engineering a Network Management System for FTTH Access Network
M.S. Ab-Rahman,B.C. Ng,K. Jumari
Journal of Applied Sciences , 2009,
Abstract: This study presented a Fiber-To-The-Home (FTTH) network management system named Smart Access Network_Testing, Analyzing and Database (SANTAD) for optical monitoring and network troubleshooting based on Visual Basic. SANTAD is the new upgraded values of recent FTTH technology toward the implementation of smart network, which involved in the centralized monitoring, failure detection, automatic recovery and increases the survivability and maintainability of FTTH. The working principles of SANTAD are structured into remote access control and advanced data analyzing for pre-configured protection and post-fault restoration in FTTH. The developed program is able to quick identify any occurrence of fault and address the exact failure location in the network system. This study also described how the FTTH can reduce the greenhouse gases (GHG) emissions in order to contribute to wider global struggle to ensure our future environment and discussed the uses of laser as optical source in optical fiber communication system as well as the eye safety issues with laser.
The Eye Diagram Analysis of Restoration Scheme in FTTH-PON
M.S. Ab-Rahman,L. Al-Hakim Azizan,S.A.C. Aziz,K. Jumari
Journal of Applied Sciences , 2011,
Abstract: In this study, a technique for automatic restoration scheme for the ease of customers in a passive optical network is proposed. Protection switching against the failure in fiber line is carried out using our restoration scheme. The smart and intelligent system of FTTH is expected to be a key element which provides centralized monitoring, survivability and instantly maintenance of FTTH customer access network. In this study, we implement a cost effective restoration scheme for a novel tree-based for Intermediate Split Structure (ISS) in the drop region section. The protection mechanism for tree based optical switch will have capability to divert the signal onto protection line according to the types of failure condition and location of failures in access network by means of Zig Zag mechanism. This will ensure the data flow continuously due to breakdown occur in the network and instantly repair operation. We employ the dedicated and shared protection in our design. Four faulty conditions are considered in this article and OptiSystem, Inc. software is used to prove the solution feasibility. This study focused on the eye diagram parameter analysis in the FTTH-PON network during the working and failure condition. Four parameters will be concentrated which are BER, eye opening, maximum Q factor and jitter. In the case of failure condition, four restoration schemes are activated to ensure the signal flow continuously without perturbation.
Analysis of TE (transverse electric) modes of symmetric slab waveguide
H. Ramza,F. Nasimi,K. A. Ishak,M. S. Ab-Rahman
Advanced Studies in Theoretical Physics , 2012,
The critical observation of possibility analysis of particles in the Maxwell-Boltzmann distribution law
H. Ramza,L. H. Azizan,N. H. Kamaruddin,M. S. Ab-Rahman
Advanced Studies in Theoretical Physics , 2012,
Multi-Dimensional Assessment (MDA): Setting the Research Diversity
Mohammad Syuhaimi Ab-Rahman
Journal of Engineering and Applied Sciences , 2012, DOI: 10.3923/jeasci.2011.452.456
Abstract: The pillar of excellence in research is based on research findings such as publishing, commercialization and the creation of new policies. Excellence in publishing is viewed from three angles, namely the number of citation, quality and quantity of publications. This study proposes a method to maximize the research results through the review and set a variety of research. A technique introduced as Multi Dimensional Assessment (MDA). Through this technique, the research and research results observed from a different angle seen by the components and each angle produces a component that will be manipulated and processed for publications. Therefore, a small research with few results capable to produce a high number of publications. This study also proposes the use of these MDA techniques, so they can create other research projects from a single research project. Through the MDA technique, the diversity in research and the results can be achieved.
The Role of SPECTECH and RASP in the Realization of National and University Transformation Plan One Aim, One Goal
Mohammad Syuhaimi Ab-Rahman
Journal of Engineering and Applied Sciences , 2012, DOI: 10.3923/jeasci.2012.227.231
Abstract: This study forecasts the resurrection in the form of the contribution by Spectrum Technology Research Group (SPECTECH) and Research Advancement Strategic and Planning (RASP) to realize the university transformation plan and thus, the contribution to the country s economic transformation. This study also proposes initiatives to be taken to improve university s publication KPI by forming the internal network that connects outstanding faculty and faculty who are not able to publish. With this network, researchers from the faculty to publish less have the opportunity to collaborate with researchers from outstanding faculty to jointly carry out a research and subsequently get to publish as well as opening a new chapter in the research world. In addition, examples of which will be projected until the year 2018 by using the analysis of recent achievements are discussed in this study.
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