scholarly journals Effects of Modulation Techniques (Manchester Code, NRZ or RZ) on the Operation of Hybrid WDM/TDM Passive Optical Networks

2014 ◽  
Vol 2014 ◽  
pp. 1-8
Author(s):  
Kumbirayi Nyachionjeka ◽  
Wellington Makondo
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Passive Optical Network ◽  
Modulation Formats ◽  
Wavelength Division ◽  
Modulation Format ◽  
Triple Play ◽  
Triple Play Services ◽  
Time Division

In this paper, the performance and feasibility of a hybrid wavelength division multiplexing/time division multiplexing passive optical network (WDM/TDM PON) system with 128 optical network units (ONUs) is analysed. In this system, triple play services (video, voice and data) are successfully communicated through a distance of up to 28 km. Moreover, we analysed and compared the performance of various modulation formats for different distances in the proposed hybrid WDM/TDM PON. NRZ rectangular emerged as the most appropriate modulation format for triple play transmission in the proposed hybrid PON.

An Improved Hybrid WDM/TDM PON Model with Enhanced Performance Using Different Modulation Formats of WDM Transmitter

2018 ◽  
Vol 0 (0) ◽  
Author(s):  
Anil Kumar ◽  
Rajneesh Randhawa
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Passive Optical Network ◽  
Modulation Formats ◽  
Eye Diagram ◽  
Fiber Networks ◽  
Wavelength Division ◽  
Optical Fiber Networks ◽  
Proposed Model ◽  
Time Division

AbstractIn this paper, we have proposed an improved hybrid passive optical network model using wavelength division multiplexing (WDM) and time division multiplexing (TDM) with 96 users in the bidirectional optical fiber networks. The performance is evaluated based on different distances and modulation formats with the help of Q factor, BER and Eye diagram. In the proposed model, the data is successfully transmitted up-to a distance of 96 km with a data rate of 10 Gbits/sec. Comparative analysis of proposed models with respect to other four models are hence put forth.

scholarly journals Performance Analysis of Different Electrical Filters in 10G Hybrid Passive Optical Network

2018 ◽  
Vol 7 (4) ◽  
pp. 6652
Author(s):  
N. Subhashini ◽  
A. Brintha Therese
Keyword(s):  
Optical Networks ◽  
Wavelength Division Multiplexing ◽  
Transmission Rate ◽  
Optical Network ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Modulation Format ◽  
Optic Fibers ◽  
The Cost ◽  
Wdm Pon

With growing number of applications and network traffic, optic fibers are extensively used in the access part of the network. Passive Optical Networks (PON) in particular, Ethernet PON (EPON) networks based on Time Division Multiple Access (TDMA) are more prominently used in many parts of the world. Though Wavelength Division Multiplexing (WDM) PON has its own advantages, considering the cost and utilisation of such networks in the access part makes it less useful. On the other hand, Hybrid PON network combines the advantages of both EPON and WDM PON Networks. The objective of this paper is to identify suitable electrical filters for a 16-channel Hybrid Passive Optical Network with a transmission rate of 10Gbps per channel, by analysing their performance in terms of Q factor and Bit Error Rate. Different filters like the Bessel filter, Gaussian filter, Raised Cosine Filter, Rectangular filter, Butterworth filter, Chebyshev Filter are compared and their performances are evaluated. DB Modulation format that provides a longer reach is used at the transmitter to evaluate the different scenarios and the simulation is carried out using Optisystem.

scholarly journals Mathematical Verification for Transmission Performance of Centralized Lightwave WDM-RoF-PON with Quintuple Services Integrated in Each Wavelength Channel

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Shuai Chen ◽  
Wei Nai ◽  
Fangqi Zhang ◽  
Shaoyin Wang ◽  
Decun Dong ◽  
...  
Keyword(s):  
System Design ◽  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Passive Optical Network ◽  
Transmission Performance ◽  
Modulation Formats ◽  
Wavelength Division ◽  
Wavelength Channel ◽  
The One ◽  
Wdm Pon

Wavelength-division-multiplexing passive-optical-network (WDM-PON) has been recognized as a promising solution of the “last mile” access as well as multibroadband data services access for end users, and WDM-RoF-PON, which employs radio-over-fiber (RoF) technique in WDM-PON, is even a more attractive approach for future broadband fiber and wireless access for its strong availability of centralized multiservices transmission operation and its transparency for bandwidth and signal modulation formats. As for multiservices development in WDM-RoF-PON, various system designs have been reported and verified via simulation or experiment till now, and the scheme with multiservices transmitted in each single wavelength channel is believed as the one that has the highest bandwidth efficiency; however, the corresponding mathematical verification is still hard to be found in state-of-the-art literature. In this paper, system design and data transmission performance of a quintuple services integrated WDM-RoF-PON which jointly employs carrier multiplexing and orthogonal modulation techniques, have been theoretically analyzed and verified in detail; moreover, the system design has been duplicated and verified experimentally and the theory system of such WDM-RoF-PON scheme has thus been formed.

Performance Evaluation of Optical Networks Using Advanced Modulation Format

2018 ◽  
Vol 37 ◽  
pp. 72-77
Author(s):  
Simbarashe Magidi
Keyword(s):  
Performance Evaluation ◽  
Optical Networks ◽  
Network Performance ◽  
Optical Network ◽  
Passive Optical Network ◽  
Maximum Distance ◽  
Q Factor ◽  
Modulation Format ◽  
Triple Play ◽  
Eye Opening

In this paper, we have evaluated the performance of DPSK advanced modulation format in a bidirectional passive optical network for a triple play scenario at a constant symmetrical data rate of 10 Gbps. Data, voice and video signal has been successfully transmitted to a maximum of 128 users for a maximum distance of 100 km. Network performance was measured in terms of the Q factor, BER and eye opening, as a function of the number of users and distance of reach.

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