scholarly journals Protection Scheme for a Wavelength-Division-Multiplexed Passive Optical Network Based on Reconfigurable Optical Amplifiers

2021 ◽  
Vol 12 (1) ◽  
pp. 365
Author(s):  
Hong-Sing Lee ◽  
Chun-Liang Yang ◽  
Chien-Hsiang Chou
Keyword(s):  
Optical Amplifiers ◽  
Optical Switch ◽  
Optical Network ◽  
High Capacity ◽  
Optical Amplifier ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Protection Scheme ◽  
Wdm Pon

This paper demonstrates a wavelength-division-multiplexed passive optical network (WDM-PON) scheme based on novel reconfigurable optical amplifiers (ROAs). The measured switching characteristics of the ROA3 constructed with a 2 × 2 crossbar optical switch and a four-port reversible optical circulator (OC) and a conventional EDFA can meet the requirements of most network management and surveillance. The self-made four-port reversible OC’s response time is less than 2 ms, and its insertion losses are about 1 dB or less for all the transmission paths and switching states. An optimal design of ROAs is proposed and evaluated for bidirectional optical amplifier protection, in which ROA3 has an EDF length of 7.5 m long with a 1480 nm pump laser and possesses a backward or forward pumping configuration with the corresponding pump power of 200 mW or 50 mW. We verified the scheme’s feasibility through a simulation of WDM-PON systems with 40 downstream and upstream channels. This scheme enables the intelligent protection switching in practical operation scenarios for high-capacity multi-wavelength networks.

A Novel Multi-Service Passive Optical Network Based on the Wavelength-Division-Multiplexed Technology

2014 ◽  
Vol 538 ◽  
pp. 490-493 ◽  
Author(s):  
Ping Li ◽  
Zhen Ping Lan ◽  
Yu Ru Wang ◽  
Huan Lin Lv ◽  
Nian Yu Zou
Keyword(s):  
Transmission Rate ◽  
Optical Network ◽  
Passive Optical Network ◽  
Light Sources ◽  
Waveguide Grating ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Dfb Laser ◽  
Array Waveguide Grating ◽  
Wdm Pon

The simulation diagram of WDM-PON is proposed, utilizing DFB laser diodes as light sources, array waveguide grating as multiplexer for signals’ split and amplifiers as gain generator, respectively, to realize networking for both sending and receiving units. WDM-PON system with 128 branches service signals and transmission rate of 210Gb/s is finally simulated and the system performances are analyzed and discussed.

Broadband Optical Access using Centralized Carrier Distribution

2012 ◽  
pp. 1958-1977
Author(s):  
Chi-Wai Chow
Keyword(s):  
Optical Network ◽  
Cost Effective ◽  
Passive Optical Network ◽  
Carrier Distribution ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
Wavelength Division Multiplexed ◽  
Fiber To The Home ◽  
Beat Noise ◽  
Wdm Pon

Passive optical network (PON) is considered as an attractive fiber-to-the-home (FTTH) technology. Wavelength division multiplexed (WDM) PON improves the utilization of fiber bandwidth through the use of wavelength domain. A cost-effective solution in WDM PON would use the same components in each optical networking unit (ONU), which should thus be independent of the wavelength assigned by the network. Optical carriers are distributed from the head-end office to different ONUs to produce the upstream signals. Various solutions of colorless ONUs will be discussed. Although the carrier distributed WDM PONs have many attractive features, a key issue that needs to be addressed is how best to control the impairments that arise from optical beat noise induced by Rayleigh backscattering (RB). Different RB components will be analyzed and RB mitigation schemes will be presented. Finally, some novel PONs including signal remodulation PONs, long reach PONs and wireless/wired PONs will be highlighted.

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.

RSOA-Based Full-Duplex WDM-PON for 20 Gbps Transmission in Two Channels Over a Long-Haul SMF Using External Modulation Scheme

2015 ◽  
Vol 36 (3) ◽  
Author(s):  
Anindya Sundar Das ◽  
Ardhendu Sekhar Patra
Keyword(s):  
Optical Network ◽  
Single Mode ◽  
Optical Amplifier ◽  
Single Mode Fiber ◽  
Passive Optical Network ◽  
Full Duplex ◽  
Modulation Scheme ◽  
Wavelength Division ◽  
External Modulation ◽  
Wdm Pon

AbstractWe have proposed and demonstrated a full-duplex wavelength division multiplexed passive optical network (WDM-PON) configuration based on reflective semiconductor optical amplifier (RSOA). RSOA is used for reusing and remodulate the downlink signal in the uplink. We have used external modulation scheme for transmitting 20 Gbps data rates in two channels over a 40 km single mode fiber (SMF). The uplink and the downlink performances are checked by the bit error rate (BER) and the eye diagrams.

The Research of a New Kind of Multi-Stage Wavelength-Division-Multiplexed Passive Optical Network Based on Engineering Materials

2012 ◽  
Vol 460 ◽  
pp. 193-197
Author(s):  
Qing Hu ◽  
Zheng Hua Luo ◽  
Xiao Dan Du ◽  
Jin Wang
Keyword(s):  
Optical Network ◽  
Specific Area ◽  
Modern Society ◽  
Passive Optical Network ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Multi Stage ◽  
User Groups ◽  
Future Direction ◽  
Wdm Pon

The passive optical network (PON) is widely used in different kinds of fields in modern society. Among the PON technologies, Wavelength-division-multiplexed Passive Optical Network (WDM-PON), which has much higher bandwidth, is the important future direction of the optical fiber access. The Single-stage WDM-PON is commonly used from Central Office (CO) to concentrated user groups in a specific area, and the applied field is limited. In this paper, a new network structure and the key technologies of WDM-PON have been studied to increase the access range and number of users, reduce costs and accelerate the realistic applications of WDM-PON technology, which has expensive devices and equipment.

Long Reach 10-Gbps WDM-PON Based on Carrier Distribution and Coherent Detection for Upstream Transmission

2014 ◽  
Vol 989-994 ◽  
pp. 3806-3809
Author(s):  
Ji Hong Liu ◽  
Yan Ping Ma ◽  
Shao Rui Ren ◽  
Yang Yang ◽  
Bin Zhang
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Amplifiers ◽  
Optical Network ◽  
Cost Effective ◽  
Coherent Detection ◽  
Passive Optical Network ◽  
Carrier Distribution ◽  
Wavelength Division ◽  
Systems Simulation ◽  
Wdm Pon

The wavelength division multiplexing passive optical network (WDM-PON) incorporated with colorless optical network units (ONUs) and centralized light source is the most promising approach for next generation PON. A cost-effective architecture utilizing coherent detection for upstream (US) signal is proposed to enlarge the reach of such WDM-PON systems. Simulation results show that a symmetric 10-Gbps WDM-PON with 80km error-free transmission is realized without using any optical amplifiers.

Broadband Optical Access using Centralized Carrier Distribution

2010 ◽  
pp. 102-121
Author(s):  
Chi-Wai Chow
Keyword(s):  
Optical Network ◽  
Cost Effective ◽  
Passive Optical Network ◽  
Carrier Distribution ◽  
Wavelength Division ◽  
Rayleigh Backscattering ◽  
Wavelength Division Multiplexed ◽  
Fiber To The Home ◽  
Beat Noise ◽  
Wdm Pon

Passive optical network (PON) is considered as an attractive fiber-to-the-home (FTTH) technology. Wavelength division multiplexed (WDM) PON improves the utilization of fiber bandwidth through the use of wavelength domain. A cost-effective solution in WDM PON would use the same components in each optical networking unit (ONU), which should thus be independent of the wavelength assigned by the network. Optical carriers are distributed from the head-end office to different ONUs to produce the upstream signals. Various solutions of colorless ONUs will be discussed. Although the carrier distributed WDM PONs have many attractive features, a key issue that needs to be addressed is how best to control the impairments that arise from optical beat noise induced by Rayleigh backscattering (RB). Different RB components will be analyzed and RB mitigation schemes will be presented. Finally, some novel PONs including signal remodulation PONs, long reach PONs and wireless/wired PONs will be highlighted.

Wavelength-division-multiplexed passive optical network (WDM-PON) technologies for broadband access: a review [Invited]

2005 ◽  
Vol 4 (11) ◽  
pp. 737 ◽  
Author(s):  
Amitabha Banerjee ◽  
Youngil Park ◽  
Frederick Clarke ◽  
Huan Song ◽  
Sunhee Yang ◽  
...  
Keyword(s):  
Optical Network ◽  
Passive Optical Network ◽  
Broadband Access ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Wdm Pon
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