Transparent Two-Fiber Optical Channel Shared Protection Ring

Li, M. J.

doi:10.1080/01468030390237851

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…Last year, Corning reported a transparent two fiber optical channel shared protection ring at OFC'2001and NFOEC'2001 [12,13]. The node design was a wavelength-layered architecture shown in Figure 7.…”

Section: Two-fiber Ringmentioning

confidence: 98%

“…Recently, Corning expanded the two-fiber ring work to a four-fiber ring and demonstrated both span and ring switching [14]. The node design of the four-fiber OChSPRING using a wavelength-layered architecture is shown in Figure 10.…”

Section: Four-fiber Ringmentioning

confidence: 98%

“…As it can be seen in the next sections, some of them have been demonstrated experimentally. Proposals for ring functionality and APS rules for transparent optical rings have been submitted to standards bodies such as ANSI T1X1and ITU-T [15][16][17][18]. Issues related to optical performance monitoring are being actively investigated [19][20][21].…”

Section: Optical Protection Ring Architecturesmentioning

confidence: 99%

“…It offers excellent resilience to failures and potentially a very short switching time (<50 ms) that is similar to SONET self-healing rings. Several experimental demonstrations on optical protection rings including dedicated protection rings and shared protection rings have been reported recently [4][5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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<title>Optical protection ring architectures and applications</title>

2002

SPIE Proceedings

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This paper surveys recent progress in optical protection rings with the focus on transparent optical protection rings. Generic requirements and attributes for optical protection rings, different optical protection ring architectures such as dedicated and shared protection rings in both the optical channel layer and the optical multiplex section layer are described. In particular, optical channel shared protection rings are discussed in detail including node architecture designs, ring protocols, triggers and messaging channels. Feasibility studies and experimental results from Corning Incorporated and other companies are reviewed. The paper also discusses how protection switching times scale with number of nodes and number of wavelengths, and shows examples of applications using the scaling rules for practical optical networks such as metro, regional and long haul ring network. Finally, the paper discusses remaining issues and future developments in the optical protection ring area.

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Section: Two-fiber Ringmentioning

confidence: 98%

Section: Four-fiber Ringmentioning

confidence: 98%

Section: Optical Protection Ring Architecturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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<title>Optical protection ring architectures and applications</title>

2002

SPIE Proceedings

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“…SONET and SDH networks are generally deployed as a ring topology [45] due to its high degree of network survivability [46]. There are three choices available for ring based protection [47][48][49][50][51][52][53][54] Because half of the capacity in each fiber is reserved for protection, the redundancy of ring protection approaches is at least 100%. Thus, the drawback of ring protection approaches is the inefficient usage of the expensive bandwidth resources of the network.…”

Section: Ring Based Approachesmentioning

confidence: 99%

Design and analysis of p-cycle-based fault-restorable optical networks with multicast capability

Zhang¹

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With recent advancement in optical transmission technology, WDM networks are able to offer huge capacity to meet the exponentially increasing demand. However, because network failures are capricious, without an efficient and fast recovery mechanism, they can cause huge data loss and therefore lead to severe disruption to network services and calamitous loss to end users. Hence, survivability is crucial to WDM networks carrying huge amount of unicast and multicast traffic. Compared with unicast traffic, multicast traffic suffers even more in a network failure. If a link/node in a multicast session fails, the traffic to all the downstream destinations of the failed link/node will be affected as well. In the past, extensive research has been directed to unicast traffic protection, due to its predominance. Recently, due to the rapid growth of multicast applications, such as video-conferencing, high definition television (HDTV), distance learning, multi-player on-line gaming, and so on, the problem of multicast traffic protection has started to draw more and more research interests. To our best knowledge, the preconfigured protection cycle (p-cycle) based approaches, which have been intensively studied for unicast traffic protection, have not been investigated for multicast traffic protection yet. Thus, motivated by the impact of the network failures to the optical multicast traffic and the merits of p-cycles, this thesis focuses on development and investigation of p-cycle based protection approaches for optical multicast traffic protection. The link-protecting p-cycle based approach for multicast traffic protection against link failure is analyzed first. The link protecting p-cycle based protection approach is shown to offer much better performance, compared with all other approaches. In particular, the joint optimization algorithm of p-cycle based link protection proposed achieves the best capacity efficiency among all algorithms for link failure recovery of static multicast traffic. For link

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The method of WDM network reserving based on the p–cycle

Abdujapparova

Sadchikova

2022

2022 International Conference on Information Science and Communications Technologies (ICISCT)

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Transparent Two-Fiber Optical Channel Shared Protection Ring

Cited by 5 publications

References 3 publications

<title>Optical protection ring architectures and applications</title>

<title>Optical protection ring architectures and applications</title>

Design and analysis of p-cycle-based fault-restorable optical networks with multicast capability

The method of WDM network reserving based on the p–cycle

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