Clustering-based multi-hop protection scheme for long-reach passive optical network against single shared-risk link group failure

2016 ◽  
Vol 32 (3) ◽  
pp. 372-385 ◽  
Author(s):  
Jitendra Gupta ◽  
Aneek Adhya
Keyword(s):  
Optical Network ◽  
Passive Optical Network ◽  
Protection Scheme ◽  
Link Group ◽  
Shared Risk ◽  
Group Failure

Protection Approach against SRLG Failure for Survivable Long-Reach Passive Optical Network in Smart Grid

2014 ◽  
Vol 1049-1050 ◽  
pp. 2131-2134
Author(s):  
Hong Hao Zhao ◽  
Fan Bo Meng ◽  
Tai Yi Fu ◽  
Ming Shuang Gao
Keyword(s):  
Smart Grid ◽  
Optical Network ◽  
Passive Optical Network ◽  
High Rate ◽  
Reliability Model ◽  
Fiber Failure ◽  
Key Issues ◽  
Promising Solution ◽  
Shared Risk ◽  
Network Component

Long-Reach Passive Optical Network (LR-PON) is widely acknowledged as a promising solution for communication system in smart grid. Survivability is one of the key issues in the planning of LR-PON because massive high-rate traffic flows may be interrupted in case of network component failure. However, the survivability issue of LR-PON is addressed in few works. Most of previous works focus on single distribution fiber failure and remain untouched the simultaneous failure of multiple distribution fibers. In this paper, we focus on the survivability of LR-PON against single Shared-Risk Link Group (SRLG) failure. A reliability model is proposed to represent the probability of reliable connection for each Optical Network Unit (ONU). Based on this reliability model, we propose a novel Backup Fibers Protection (BFP) approach, aiming at the optimization of joint allocating backup capacity and deploying backup fibers. Through extensive simulation, we investigate the performance of BFP and demonstrate its effectiveness in different scenarios.

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.

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