Assessment and mitigation of Erbium-doped fibre amplifiers (EDFA) gain transients in hybrid wavelength division multiplexing/time division multiplexing passive optical network (WDM/TDM PON) in the presence of packet-based traffic

AbstractIn this paper, the performance of wavelength division multiplexing-passive optical network (WDM-PON) system using the erbium-doped fiber amplifier (EDFA) is optimized and evaluated. The optimization is analyzed by finding the EDFA length range at which the output power produced are the highest and the pump power range at which the gain flatness produced are within the effective range (0.3 dB). After the optimization process, the optimized EDFA system produces the gain of 26.6±0.292 dB, noise figure of 3.82 dB and output power of 7 dBm and the system is then implemented into WDM system. The performance of WDM system is compared against the system without EDFA in terms of bit error rate (BER). Results obtained prove that the proposed system with the EDFA consistently performs better than the conventional system.

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

Journal of Optical Communications ◽

10.1515/joc-2018-0154 ◽

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.

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

International Scholarly Research Notices ◽

10.1155/2014/984157 ◽

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.

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