The Next Generation CATV Tester for Ease of Monitoring and Maintenance in Fiber-to-the-Home (FTTH) Network

Fiber-to-the Home (FTTH) network system is a broadband network system which can transmit video, data and voice signals. To ensure good signals condition, a CATV tester device is proposed. The CATV tester device is designed to measure CATV signals passing through the optical network unit (ONU) at users’ premises. A single mode optical fiber signal entering the ONU will be obtained by ‘tapping’ method and the signal will then be fed into the CATV tester device through optical cable connection. A wireless technology is applied through the implementation of audio video transmitter and receiver. Then, this tester will display the received signal on the display panel. Although the signal received is accompanied by undesired signals and noises, it will then indicate that the status of main FTTH drop line, the possible damages and action needed that can be easily determined afterwards. By the application of wireless technology, signal transmitted through the fiber optic cable located underground can be easily detected and determined whether it is functioning or no

New Optical Splitter Design for Network Scalability and Flexibility

In this paper, we present the design of two optical splitter which are 2x3 optical splitter-combine and Multi Ratio Optical Splitter (MROS) based on waveguide with SU-8 polymer material. The technology ensures low cost fabrication and excellent performance as compared to conventional technique that uses fused coupler for optical splitter fabrication. Both optical splitter-combine and MROS are suggested to be used in passive customer access network FTTH-PON. The optical splitter-combine is used to variety the signals send to the premises and as for MROS, it is used in power management in minimizing the power loss. The problems arose such as the loss of output power is also discussed. The simulation result shows that factor such as wide-angle branching and refractive index will increase the output power loss. To obtain maximum power, the optimization of those parameters’ value must be used. This designed optical splitter is operated at wavelength 1500 nm – 1600 nm. In this study, we characterized the trend of total output power with the effect of the parameters studied. Keywords: Optical splitter-combine, Multi Ratio Optical Splitter, waveguide, SU-8 Polymer, parameter

Advancement of Monitoring Scheme in FTTH-PON Using Access Control System (ACS)

This paper proposes a new developed system named Access Control System (ACS) which is designed to enhance the monitoring, scalability and survivability of Passive Optical Network (PON) toward the implementation of full & Complete edition of Fiber-to-the Network (FTTH) network. The system automatically identifies faults and controls each optical fiber line to provide the restoration against failure in the drop region of PON downwardly from optical line terminal at the central office to the optical network unit of the subscriber. ACS manages the Optical Time Domain Reflectometer (OTDR) troubleshooting wavelength to enable the status of each line which can be displayed onto one single screen in the central office. Our proposed mechanism in this paper is the first reported thus far. Keywords: ACS, monitoring, path routing, experimental, FTTH-PO

Low Cost Method for Testing and Troubleshooting of FTTH-PON Using Single Optical Power Meter & OTDR : A Case Study

There are several methods for testing and troubleshooting a fiber-to-the-home passive optical network (FTTH-PON). The simplest method would be using a power meter 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 (OPM). 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 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

Optical Channel Capacity Upgrade Based on Multiwavelength Conversion XGM Using Semiconductor Optical Amplifier for Access Networks

This paper demonstrates a 10 Gb/s one-to-two-wavelength conversion configuration based on cross-gain modulation for optical access networks using a single TW-SOA. The method is capable of converting a signal data of specific wavelength 1541 nm to certain wavelengths of CW’s laser 1554 nm and 1558 nm with 4 nm spacing. The pump power level was classified due to channel response. A result obtained was the best power level offering wavelength converter between −6 and 3 dBm. The conversion efficiency achievement provided an acceptable result for probe signals. The findings of Q-factor performance were investigated. The Q values were found to be more than 9 for point to point transmission and 20 km fiber configurations for the original and converted signal. The technique implemented at 20 km and the power of all channels were adequate to provide a splitting ratio of 1/64 for the launched pump power 3 dBm

Study of Periodic Fabrication Error of Optical Splitter Device Performance

In this paper, the effect of fabrication errors (FEs) on the performance of 1×4 optical power splitter is investigated in details. The FE, which is assumed to take regular shape, is considered in each section of the device. Simulation result show that FE has a significant effect on the output power especially when it occurs in coupling regions