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Kaur, Prabhdeep
- Investigation and Evaluation of Bidirectional MDM PON Employing Concept of Mode Reuse
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Authors
Affiliations
1 Department of Electronics and Communication Engineering, Chandigarh University, Gharuan, Mohali - 140413, Punjab, IN
1 Department of Electronics and Communication Engineering, Chandigarh University, Gharuan, Mohali - 140413, Punjab, IN
Source
Indian Journal of Science and Technology, Vol 9, No 40 (2016), Pagination:Abstract
Background/Objectives: The main aim of this research paper is to evaluate the bidirectional mode division multiplexing passive optical network employing concept of mode reuse. Methods/Statistical Analysis: In this work mode reuse in MDM-PON has been intensifying the field of research due its enormous benefits. But not much work has been reported in this regard till now. In this paper the main focuses on bidirectional PON using MDM for odd modes. Mode reuse concept has been employed for upstream transmission by demodulating it through new data. Findings: While analyzing results it reveals that the upstream transmission at 45Gbps for 48 users has been attained and for downstream, again 48 users have been supported without any amplifier and dispersion compensation. Q-factor of 15 is observed in case of downstream and 11 in case of upstream for 48 users using bidirectional scheme BER of 10^-53 has been observed for downstream and 10^-30 for upstream. Application/Improvement: Use of the bandwidth efficient modulation schemes such as QAM, QPSK and DPQPSK can be studies in this work along with higher order modes. And work can be further extended to increase the data rate.Keywords
Mode Division Multiplexing (MDM), Passive Optical Network (PON), Time Division Multiplexing (TDM).- SPM Supression in Long Haul CO-OFDM System using SPWR-OPC Modules
Abstract Views :153 |
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Authors
Affiliations
1 Department of Electronic and Communication Engineering, Chandigarh University, Gharaun, Mohali - 140413, Punjab, IN
1 Department of Electronic and Communication Engineering, Chandigarh University, Gharaun, Mohali - 140413, Punjab, IN
Source
Indian Journal of Science and Technology, Vol 9, No 36 (2016), Pagination:Abstract
Objective: The main aim of this research paper is to enhance the reach of Long-haul Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) communication system. Methods/Statistical Analysis: The purpose of SPWR and OPC in CO-OFDM system is to palliate dispersion and (Non-linearity) SPM respectively. In this proposed system Symmetrical Pulse Width Reduction (SPWR) and Optical Phase Conjugate modules (OPC) are used. The CO-OFDM system is investigated to compensate SPM by using up to 6 OPCs. Findings: While analyzing results it reveals that with the increase in the number of OPCs up to 6 enhances the transmission distance of CO-OFDM system and improves the Bit Error Rate (BER) performance but if increased beyond 6 OPCs deteriorates its performance. When using six OPCs in comparison to a single OPC, the system reach extends six times. Application/Improvement: The proposed system is simulation based and in future can be implemented commercially in Digital Terrestrial Television (DTT) and real-time audio and video communication.Keywords
Coherent Optical Orthogonal Frequency Division Multiplexing, Optical Phase Conjugate, Self Phase Modulation, Symmetrical Pulse Width Reduction.- Analysis and Reduction of Crosstalk in Hybrid TWDM System using Transmitter Line Coding Diversity
Abstract Views :227 |
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Authors
Affiliations
1 Department of Electronics and Communication Engineering, Chandigarh University, National Highway 95, Chandigarh-Ludhiana Highway, Mohali, Punjab - 140413, IN
1 Department of Electronics and Communication Engineering, Chandigarh University, National Highway 95, Chandigarh-Ludhiana Highway, Mohali, Punjab - 140413, IN
Source
Indian Journal of Science and Technology, Vol 10, No 15 (2017), Pagination:Abstract
Objectives: Optical fibres are becoming the backbone of communication network due to its huge data carrying capacities. But there are many losses in the data transfer such as crosstalk which can reduce the data carrying capacity of an optical fibre network. Methods: This paper presents a crosstalk immune transmitter diversity hybrid modulation for wavelength division passive optical network, with the incorporation of Differential Phase Shift Keying (DPSK) format for downstream and Non Return-Zero (NRZ) for upstream. Findings: The network becomes less prone to nonlinearities and enables the system to support 6144/512 users. Data rate of system has been achieved for 120 Gbps downstream as each wavelength carry 10 Gbps and total 80 Gbps for upstream. An acceptable Bit Error Rate (BER) range i.e. 10-9 has been attained for a significant distance of 110 Km for both directions. The results have been attained without any dispersion compensation and costly modules only using Erbium Doped Fiber Amplifier (EDFA) for downstream. A semiconductor optical amplifier is placed to re modulate data streams. Also comparison is being done by using same transmitter and hybrid transmitters. It is observed that Differential Phase Shift Keying (DPSK) for one direction Non Return-Zero (NRZ) for upstream provide better results. Applications: This model can significantly reduce the crosstalk over an optical fibre network during the transmission of data in upstream and downstream by achieving 80Gbps and 10Gbps respectivelyKeywords
Crosstalk, Line Coding Diversity, Hybrid Systems, Transmitter.- Simulation Analysis of 240gbps Hybrid OTDM System over Symmetrical Pulse Reshaping Module
Abstract Views :189 |
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Authors
Affiliations
1 Department of Electronics and Communication Engineering, Chandigarh University, Mohali −140413, Punjab, IN
1 Department of Electronics and Communication Engineering, Chandigarh University, Mohali −140413, Punjab, IN