Simply self-restored ring-based time-division-multiplexed passive optical network

2008 ◽  
Vol 7 (4) ◽  
pp. 288 ◽  
Author(s):  
C.-H. Yeh ◽  
C.-S. Lee ◽  
S. Chi
Keyword(s):  
Optical Network ◽  
Passive Optical Network ◽  
Time Division

Performance of high scalability hybrid system of 10G-TDM-OCDMA-PON based on 2D-SWZCC code

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Haidar Zaeer Dhaam ◽  
Mohammed Jawad Al Dujaili ◽  
Mushtaq Talib Mezeel ◽  
Abdullah Ali Qasim
Keyword(s):  
Hybrid System ◽  
High Speed ◽  
Optical Network ◽  
Passive Optical Network ◽  
Orthogonal Polarization ◽  
High Speed Data ◽  
High Scalability ◽  
High Bit Rate ◽  
Code Division Multiple ◽  
Time Division

Abstract A new architecture for increasing the number of simultaneous users in a hybrid system and providing a solution for the channel bottleneck problem has been designed and simulated. The 10G-TDM-OCDMA-PON system combines optical code division multiple access (OCDMA) and time-division multiplexed passive optical network (TDM-PON) techniques. The high bit rate TDM-PON system is based on a bit interleaving that uses noncontiguous order for data arranging manner, this system used to obtain ultra-high-speed data rate of 40 Gbps based on four TDM channels of 10 Gbps. The OCDMA system is based on two-dimensional single weight zero cross-correlation (2D-SWZCC) employing polarization and wavelength scheme with two orthogonal polarization angles (vertical and horizontal states). The proposed hybrid system increases the scalability by multiplexing M OCDMA codes in the same time slot of the TDM system that has N time slots. The results show that the proposed system with 2D-SWZCC has better performance with a high number of users and higher scalability than the system with 1D-SWZCC.

A Survey of Dynamic Bandwidth Assignment Schemes for TDM-Based Passive Optical Network

2020 ◽  
Vol 41 (3) ◽  
pp. 279-293 ◽  
Author(s):  
Rizwan Aslam Butt ◽  
M. Waqar Ashraf ◽  
M Faheem ◽  
Sevia M Idrus
Keyword(s):  
Multiple Access ◽  
Optical Network ◽  
Utilization Efficiency ◽  
Passive Optical Network ◽  
Bandwidth Utilization ◽  
Available Bandwidth ◽  
Dynamic Bandwidth Assignment ◽  
Time Division ◽  
Dynamic Bandwidth ◽  
The Impact

AbstractIn time division, multiple access (TDMA)-based passive optical network (PONs), a dynamic bandwidth assignment (DBA) is necessary for efficient utilization of the available bandwidth of the upstream link. An efficient DBA scheme can improve the upstream performance of a traffic class of an ONU in two ways. First, it can increase the bandwidth assignment to it by efficiently utilizing the available bandwidth. Secondly, it can reduce the channel and frame idle time by increasing the polling frequency and by assigning extra surplus bandwidth not used by the other ONUs. Many DBA schemes have been reported for both ITU PONs (GPON and XGPON) and IEEE PONs (EPON and 10 G EPON). In this study, we explain the impact of DBA scheme on the upstream performance of PON and then do a thorough survey of both PON standards, categorize the DBA schemes and review them critically. Based on the literature review we also give our opinion on the most suitable DBA scheme for both type PONs on the basis of upstream delays, frame loss and bandwidth utilization efficiency.

Radio Over Fiber-Based Wavelength Division Multiplexed/Time Division Multiplexed Passive Optical Network Architecture Employing Mutual Injection Locked Fabry-Perot Laser Diodes

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Binoy Das ◽  
Paulomi Mandal ◽  
Khaleda Mallick ◽  
Rahul Mukherjee ◽  
Gour Chandra Mandal ◽  
...  
Keyword(s):  
Optical Network ◽  
Laser Diodes ◽  
Radio Over Fiber ◽  
Injection Locking ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Fabry Perot ◽  
Time Division ◽  
Mutual Injection Locking

AbstractWe demonstrate a radio-over-fiber-based hybrid wavelength-division-multiplexed/time division multiplexed passive optical network (PON) to transmit 5 Gbps data rate to serve 32 subscribers. A broadband light source (BLS) is realized by mutual injection locking between two Fabry-Perot laser diodes at the transmission section to seed wavelength-division-multiplexed channels. Mutual injection locking technique is used to enhance the performance over single Fabry-Perot laser diode and 15  dB/Hz improvements in relative intensity noise(RIN) is realized in our proposed network system. All-optical up-conversion of a 10-GHz 1.25 Gbps on off keying radio frequency (RF) signal is achieved using one single-arm Mach-Zehnder modulator (MZM). Transmission performance over 25-km single mode fiber is investigated. Low bit error rate with enhanced eye-diagram is obtained in our proposed system. As a result, the radio over fiber (ROF)-based wavelength-division-multiplexed/time division multiplexed PON set up employing mutually injection locked Fabry-Perot laser diodes can be a better choice in high speed long-haul optical communication system.

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