scholarly journals A Bidirectional Hybrid WDM-PON with High Data Rate Transmission for Wired and Wireless Users in Long-Reach with Enriched Noise Tolerance Capacity against Rayleigh Backscattering

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Rinki Atta ◽  
◽  
Paulomi Mandal ◽  
Nilanjana Sarkar ◽  
Ardhendu Patra ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Noise Power ◽  
Noise Tolerance ◽  
Noise Mitigation ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
High Data ◽  
Rate Transmission ◽  
Wireless Users ◽  
Data Rate Transmission

Transportation of 10 Gbps, 10 Gbps/40 GHz, 10 Gbps/200 MHz data for downlink (DL) and 6 Gbps data for uplink (UL) transmission with Rayleigh backscattering (RB) noise mitigation for wired and wireless users even in radio-frequency sensitive areas have been proposed and investigated. A 2×2 wavelength-division-multiplexing mux/demux is employed to separate DL and UL to avoid RB noise. Power penalty of < 1 dB at Bit error rate value of 10−9 and clear eye-diagrams express the reliability and fruitfulness of the proposed network.

scholarly journals A Bidirectional Hybrid WDM-PON with High Data Rate Transmission for Wired and Wireless Users in Long-Reach with Enriched Noise Tolerance Capacity against Rayleigh Backscattering

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Rinki Atta ◽  
◽  
Paulomi Mandal ◽  
Nilanjana Sarkar ◽  
Ardhendu Patra ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Noise Power ◽  
Noise Tolerance ◽  
Noise Mitigation ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
High Data ◽  
Rate Transmission ◽  
Wireless Users ◽  
Data Rate Transmission

Transportation of 10 Gbps, 10 Gbps/40 GHz, 10 Gbps/200 MHz data for downlink (DL) and 6 Gbps data for uplink (UL) transmission with Rayleigh backscattering (RB) noise mitigation for wired and wireless users even in radio-frequency sensitive areas have been proposed and investigated. A 2×2 wavelength-division-multiplexing mux/demux is employed to separate DL and UL to avoid RB noise. Power penalty of < 1 dB at Bit error rate value of 10−9 and clear eye-diagrams express the reliability and fruitfulness of the proposed network.

Hybrid WDM free space optical system using CSRZ and Rayleigh backscattering noise mitigation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Rupinder Kaur ◽  
Charanjit Singh ◽  
Rajbir Kaur
Keyword(s):  
Wavelength Division Multiplexing ◽  
Free Space ◽  
Free Space Optical ◽  
Power Budget ◽  
Noise Mitigation ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
Beat Noise ◽  
Optical Line ◽  
Insertion Losses

Abstract Hybrid wavelength-division-multiplexing (WDM) and free space optical (FSO) access networks are getting great attention due to numerous advantages. In this work, hybrid WDM-FSO system is demonstrated for 55 km at capacity of 5 × 10 Gbit/s using compressed spectrum return to zero (CSRZ) WDM-FSO in downstream and nonreturn to zero (NRZ) in upstream for demonstrating transmitter diversity which inturn decrease the interchannel interference. For the suppression of Rayleigh backscattering (RB) interferometric beat noise, bidirectional cyclic multiplexer is employed. Cyclic multiplexer provide λ 1 to λ 5 wavelengths for optical line terminal (OLT) to ONU transmission and λ 2 to λ 6 for ONU to OLT transmission. Insertion losses of each component are considered and in the end, power budget is also calculated. Results revealed that FSO length of 780–1050 m are obtained using various WDM-FSO downstream signals and their power budget, redundant budget, maximum distance, and insertion losses also calculated.

scholarly journals Relationship between the voltage applied to MZM arms and the generation of optical frequency comb

2018 ◽  
Vol 7 (4.15) ◽  
pp. 405
Author(s):  
Yousif I. Hammadi ◽  
Tahreer S. Mansour
Keyword(s):  
Continuous Wave ◽  
Frequency Comb ◽  
Optical Frequency Comb ◽  
Laser Source ◽  
Optical Frequency ◽  
High Data ◽  
Rate Transmission ◽  
Rf Signals ◽  
Rf Signal ◽  
Data Rate Transmission

In this study, an optical frequency comb source (OFCS) based on a dual-drive Mach–Zehnder modulator (MZM) is constructed and theoretically demonstrated. A mathematical model of the constructed OFCS is then built to investigate the effect of the peak-to-peak radio frequency (RF) signals applied to the MZM arms on the generated optical frequency comb (OFC) lines at the MZM output. A dual-drive MZM, a continuous wave laser source, and an RF signal source are included in the OFCS. The chirp parameter can be controlled and 64 comb lines generated at a comb spacing of 25 GHz by regulating voltages applied to the MZM arms. The developed OFCS is relatively simple but valuable. The generated OFC lines can be used for high data-rate transmission.  

scholarly journals A 5G C-RAN Optical Fronthaul Architecture for Hotspot Areas Using OFDM-Based Analog IFoF Waveforms

2019 ◽  
Vol 9 (19) ◽  
pp. 4059 ◽  
Author(s):  
Charoula Mitsolidou ◽  
Christos Vagionas ◽  
Agapi Mesodiakaki ◽  
Pavlos Maniotis ◽  
George Kalfas ◽  
...  
Keyword(s):  
Wavelength Division Multiplexing ◽  
Integrated Circuit ◽  
Orthogonal Frequency Division Multiplexing ◽  
Access Network ◽  
Intermediate Frequency ◽  
Error Vector Magnitude ◽  
Photonic Integrated Circuit ◽  
Wavelength Division ◽  
High Data ◽  
Radio Access

Analog fronthauling is currently promoted as a bandwidth and energy-efficient solution that can meet the requirements of the Fifth Generation (5G) vision for low latency, high data rates and energy efficiency. In this paper, we propose an analog optical fronthaul 5G architecture, fully aligned with the emerging Centralized-Radio Access Network (C-RAN) concept. The proposed architecture exploits the wavelength division multiplexing (WDM) technique and multicarrier intermediate-frequency-over-fiber (IFoF) signal generation per wavelength in order to satisfy the demanding needs of hotspot areas. Particularly, the fronthaul link employs photonic integrated circuit (PIC)-based WDM optical transmitters (Txs) at the baseband unit (BBU), while novel reconfigurable optical add-drop multiplexers (ROADMs) cascaded in an optical bus are used at the remote radio head (RRH) site, to facilitate reconfigurable wavelength switching functionalities up to 4 wavelengths. An aggregate capacity of 96 Gb/s has been reported by exploiting two WDM links carrying multi-IF band orthogonal frequency division multiplexing (OFDM) signals at a baud rate of 0.5 Gbd with sub-carrier (SC) modulation of 64-QAM. All signals exhibited error vector magnitude (EVM) values within the acceptable 3rd Generation Partnership Project (3GPP) limits of 8%. The longest reach to place the BBU away from the hotspot was also investigated, revealing acceptable EVM performance for fiber lengths up to 4.8 km.

60 GHz SoC/SoP radio system for high data-rate transmission

2010 ◽  
Vol 52 (3) ◽  
pp. 667-673 ◽  
Author(s):  
K. C. Eun ◽  
J.J. Lee ◽  
D. Y. Jung ◽  
S. J. Cho ◽  
H. Y. Kim ◽  
...  
Keyword(s):  
Data Rate ◽  
High Data Rate ◽  
60 Ghz ◽  
Radio System ◽  
High Data ◽  
Rate Transmission ◽  
Data Rate Transmission
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