A Scheme for UDWDM-PON Broadband Access Network Using a Mode Locked Laser Diode and Optical Injection Locking

2018 ◽  
Vol 39 (4) ◽  
pp. 407-412
Author(s):  
Meenakshi Chakraborty ◽  
Taraprasad Chattopadhyay
Keyword(s):  
Signal Transmission ◽  
Optical Network ◽  
Access Network ◽  
Optical Injection ◽  
Passive Optical Network ◽  
Long Distance ◽  
Optical Injection Locking ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Video Signals

Abstract This paper describes an useful scheme of ultra-dense wavelength division multiplexed-passive optical network (UDWDM-PON) meant for the bidirectional transmission of analog video signals to the users in the Optical Network Unit (ONU). Each user has a dedicated wavelength which carries a group of analog video channels. This PON scheme is bidirectional with a long distance of transmission of 100 km typically over a single optical fiber. The video channels designated for a particular user in the ONU can be continuously tuned by a post-detection tunable bandpass filter. Intermodulation distortion (IMD) resulting from a mixing of analog video channels carried by a single wavelength has been calculated for a group of three video channels which lies in the range of –30 dB to –85 dB typically for a set of values of parameters used in practice. This IMD level is fairly acceptable for analog video signal transmission and reception in practice. The novelty of this scheme is that it is long reach.

scholarly journals 5 × 5 25 Gbit/s WDM-MDM

2015 ◽  
Vol 36 (4) ◽  
Author(s):  
Yousef Fazea ◽  
Angela Amphawan
Keyword(s):  
Optical Network ◽  
Access Network ◽  
High Capacity ◽  
Passive Optical Network ◽  
Broadband Access ◽  
Wavelength Division ◽  
Modal Dispersion ◽  
Wavelength Division Multiplexed ◽  
Data Capacity ◽  
Fiber Link

AbstractWavelength-division multiplexed-passive optical network (WDM-PON) is a revolutionary high-capacity and scalable broadband access network. This paper capitalizes on Laguerre–Gaussian (LG) modes to reduce modal dispersion and increase data capacity. A data rate of 25 Gbit/s is attained for a multimode fiber link by multiplexing five LG modes on five wavelengths centered at 1,550.12 nm for a distance up to 800 m.

A Novel Scheme for UDWDM-PON Broadband Access Network Using Injection-Locked Phase-to-Intensity Modulation Converter

2019 ◽  
Vol 40 (4) ◽  
pp. 369-377 ◽  
Author(s):  
Meenakshi Chakraborty ◽  
Taraprasad Chattopadhyay
Keyword(s):  
Optical Network ◽  
Access Network ◽  
Cost Effective ◽  
Intensity Modulation ◽  
Passive Optical Network ◽  
Broadband Access ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Optical Line ◽  
Broadband Access Network

Abstract In this paper, we have proposed and analyzed a novel cost-effective ultradense wavelength division multiplexed (UDWDM) passive optical network (PON) which uses phase modulation (PM) of the optical carriers in the optical line terminal (OLT) in order to achieve inherent noise immunity in the network. In the demodulation of the optical PM signal at the optical network unit (ONU), we have proposed to use a simple injection–locked Fabry–Perot (FP) laser diode (LD) for achieving PM to intensity modulation (IM) converter which is followed by a photodiode to recover the specific channel information. A detailed analysis of PM–IM conversion in an injection–locked FPLD has been carried out and the viability of the proposed scheme has been established. The proposed UDWDM–PON which is a broadband access network is cost-effective and long reach.

Wavelength Division Multiplexed Passive Optical Networks

2010 ◽  
pp. 68-101
Author(s):  
Calvin C.K. Chan
Keyword(s):  
Optical Networks ◽  
Large Scale ◽  
Driving Forces ◽  
Optical Network ◽  
Access Network ◽  
High Capacity ◽  
Next Generation ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Capacity Data

Wavelength division multiplexed passive optical network has emerged as a promising solution to support a robust and large-scale next generation optical access network. It offers high-capacity data delivery and flexible bandwidth provisioning to all subscribers, so as to meet the ever-increasing bandwidth requirements as well as the quality of service requirements of the next generation broadband access networks. The maturity and reduced cost of the WDM components available in the market are also among the major driving forces to enhance the feasibility and practicality of commercial deployment. In this chapter, the author will provide a comprehensive discussion on the basic principles and network architectures for WDM-PONs, as well as their various enabling technologies. Different feasible approaches to support the two-way transmission will be discussed. It is believed that WDM-PON is an attractive solution to realize fiber-to-the-home (FTTH) applications.

Comparative Analysis of High Speed 20/20 Gbps OTDM-PON, WDM-PON and TWDM-PON for Long-Reach NG-PON2

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Meet Kumari ◽  
Reecha Sharma ◽  
Anu Sheetal
Keyword(s):  
Wavelength Division Multiplexing ◽  
High Speed ◽  
Optical Network ◽  
Access Network ◽  
Cost Effective ◽  
Input Power ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Transmission Distance ◽  
Wdm Pon

AbstractNowadays, bandwidth demand is enormously increasing, that causes the existing passive optical network (PON) to become the future optical access network. In this paper, next generation passive optical network 2 (NG-PON2) based, optical time division multiplexing passive optical network (OTDM-PON), wavelength division multiplexing passive optical network (WDM-PON) and time & wavelength division multiplexing passive optical network (TWDM-PON) systems with 20 Gbps (8 × 2.5 Gbps) downstream and 20 Gbps (8 × 2.5 Gbps) upstream capacity for eight optical network units has been proposed. The performance has been compared by varying the input power (−6 to 27 dBm) and transmission distance (10–130 km) in terms of Q-factor and optical received power in the presence of fiber noise and non-linearities. It has been observed that TWDM-PON outperforms OTDM-PON and WDM-PON for high input power and data rate (20/20 Gbps). Also, TWDM-PON shows its superiority for long-reach transmission up to 130 km, which is a cost-effective solution for future NG-PON2 applications.

Radio Over Fiber-Based Wavelength Division Multiplexed/Time Division Multiplexed Passive Optical Network Architecture Employing Mutual Injection Locked Fabry-Perot Laser Diodes

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Binoy Das ◽  
Paulomi Mandal ◽  
Khaleda Mallick ◽  
Rahul Mukherjee ◽  
Gour Chandra Mandal ◽  
...  
Keyword(s):  
Optical Network ◽  
Laser Diodes ◽  
Radio Over Fiber ◽  
Injection Locking ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Fabry Perot ◽  
Time Division ◽  
Mutual Injection Locking

AbstractWe demonstrate a radio-over-fiber-based hybrid wavelength-division-multiplexed/time division multiplexed passive optical network (PON) to transmit 5 Gbps data rate to serve 32 subscribers. A broadband light source (BLS) is realized by mutual injection locking between two Fabry-Perot laser diodes at the transmission section to seed wavelength-division-multiplexed channels. Mutual injection locking technique is used to enhance the performance over single Fabry-Perot laser diode and 15  dB/Hz improvements in relative intensity noise(RIN) is realized in our proposed network system. All-optical up-conversion of a 10-GHz 1.25 Gbps on off keying radio frequency (RF) signal is achieved using one single-arm Mach-Zehnder modulator (MZM). Transmission performance over 25-km single mode fiber is investigated. Low bit error rate with enhanced eye-diagram is obtained in our proposed system. As a result, the radio over fiber (ROF)-based wavelength-division-multiplexed/time division multiplexed PON set up employing mutually injection locked Fabry-Perot laser diodes can be a better choice in high speed long-haul optical communication system.

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