Performance of Carrier- Suppressed Return-to-Zero(CSRZ), Duo binary Return-to-Zero(DRZ) and Modified Duo binary Return-to-Zero(MDRZ) Modulation Methods in WDM-PON Systems
Yankho Alexander Chitungu1, Gurmeet Singh2, Dinesh Kumar Verma3
1Yankho Alexander Chitungu, Department of Electronics and Communication Engineering, PDM University, Bahadurgarh, India.
1Gurmeet Singh, Assistant Professor, Department of Electronics and Communication Engineering, PDM University, Bahadurgarh, India.
1Dinesh Kumar Verma, Assistant Professor, Department of Electronics and Communication Engineering, PDM University, Bahadurgarh, India.
Manuscript received on July 02, 2020. | Revised Manuscript received on July 05, 2020. | Manuscript published on July 30, 2020. | PP: 22-25 | Volume-10 Issue-1, July 2020. | Retrieval Number: A34520710120/2020©BEIESP | DOI: 10.35940/ijsce.A3452.0710120
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this paper the different modulation techniques used in fiber optic technology are compared to check which one has the better bit error rate (BER). There are a number of different modulation techniques used in WDN-PON systems but here the comparison is made among carrier-suppressed return-to-zero (CSRZ), duobinary return-to-zero (DRZ) and modified duobinary return-to-zero (MDRZ) modulation. The comparison to determine which is better is made my performing simulations in OptiSystem version 17 software. OptiSystem 17 is the current version of the software at the time the simulations were being carried out. In the OptiSystem software an optical fiber system is simulated from transmitter all the way to receiver. In the experiment when checking the performance of the different modulation formats, the optical fiber and the receiver are left unchanged and only the transmitter part is changed according to the modulation format being simulated at that particular instance. The modulation in the transmitter is done by using proper components from the OptiSystem library which when organized in the right order will give out a signal modulated in a certain format by the time it is fed into the optical fiber. Knowing the performance of modulation can help in WDM PON where the network gets to use passive components as it goes to user. Since no active amplification or correction equipment is used in WDM-PON, therefore using the format with the best performance can help with performance of overall system.
Keywords: Bit-error-rate, WDN-PON, Carrier suppressed return to zero, duobinary return to zero, modified duobinary return to zero.