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HomeAdvanced Engineering ForumAdvanced Engineering Forum Vol. 59Performance Analysis of a 20 Gbps Bidirectional...

Performance Analysis of a 20 Gbps Bidirectional TWDM PON for Different Modulation Formats

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Abstract:

TDM PON technology widely deployed since the early and has evolved with ease to support the increasing bandwidth demands of FTTH. This research work presents the design and performance evaluation of a bidirectional 20 Gbps Time and Wavelength Division Multiplexed Passive Optical Network (TWDM-PON). The system designed by eight channels operating at 2.5 Gbps each and is analyzed using return-to-zero (RZ), non-return-to-zero (NRZ), carrier-suppressed return-to-zero (CSRZ) and duo-binary (DB) modulation formats. Performance metrics such as Q-factor and bit error rate (BER) are evaluated under varying input power conditions. The performance comparison is made in terms of Q factor and BER for varying transmitter powers. It is found that DB modulation format gives best performance when power budget improvement is sought. For low power condition (less than -15 dBm) DB modulation format gives superior performance. High dispersion tolerance in DB makes the system better with low power budget.

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Advanced Engineering Forum Vol. 59

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Periodical:

Advanced Engineering Forum (Volume 59)

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49-59

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https://doi.org/10.4028/p-IyT0Yf

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Online since:

June 2026

Authors:

Anjumanara Begam*, Md. Asraful Sekh

Keywords:

Modulation Techniques, Optical Access Network, Time and Wavelength Division Multiplexed Passive Optical Network

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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