Design and performance of an optical path cross-connect system based on wavelength path concept

Koga, Masafumi; Hamazumi, Y.; Watanabe, A.; Okamoto, Seiji; Obara, H.; Sato, Ken-ichi; Okuno, Masayuki; Suzuki, S.

doi:10.1109/50.511612

Cited by 53 publications

(11 citation statements)

References 22 publications

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“…We assume each type of ring has 10, 15, 20, 25, or 30 nodes. The number of wavelengths per fiber is set to eight, considering the current WDM technologies [5], which follows the OPXC development and transmission experiment [8]- [10]. For each traffic distribution pattern, the simulation examined the OP scheme (WP-UR/2 versus VWP-UR/2 and WP-BR/4 versus VWP-BR/4 ) and different types of rings (WP-UR/2 versus WP-BR/4 ).…”

Section: B Network Performance Evaluationmentioning

confidence: 99%

“…The developed OPXC's have a highly sophisticated architecture which offers high modularity and upgradability from WP to VWP through the use of delivery and coupling type matrix switches (DC-SW's) [4]- [6]. The maximum designed total throughput is 900 Gb/s employing the main-and-junction-frame architecture [7], and successful transport experiments have been conducted using stand-alone OPXC with a designed total throughput of 320 Gb/s (2.5 Gb/s 128 OP's) [8], [9]. The switching experiments have confirmed the technical feasibility of the newly developed 8 16 DC-SW board [10].…”

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confidence: 99%

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Architectural analysis of multiple fiber ring networks employing optical paths

Nagatsu

Watanabe

Okamoto

et al. 1997

J. Lightwave Technol.

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This paper analyzes the performance of various types of multiple fiber ring networks employing optical paths (OP's). The multiple fiber ring network architecture is suitable for achieving failure resilient networks that have extremely large bandwidth but are still upgradable against future increases in traffic. This architecture will overcome the limitation of conventional WDM rings in terms of network expansion capabilities, the number of nodes within the ring, and the number of OP's accommodated in the network. The generic node architecture suitable for multiple fiber ring networks is presented and functionality requirements are identified. The OP accommodation design algorithms that minimize the required node system scale are proposed. Based on the generic node architecture and proposed OP accommodation design algorithms, we evaluated the performance of several types of multiple fiber rings in terms of the required node system scale for rings under various conditions. The effect of the ring architecture (uni-/bidirectional rings), optical path schemes (wavelength path/virtual wavelength path), and different node connectivity patterns are demonstrated for the first time. The obtained results elucidate the criteria for selecting the most suitable multiple fiber ring architecture.

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Section: B Network Performance Evaluationmentioning

confidence: 99%

mentioning

confidence: 99%

Architectural analysis of multiple fiber ring networks employing optical paths

Nagatsu

Watanabe

Okamoto

et al. 1997

J. Lightwave Technol.

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“…In [2,[4][5][6], the crossconnection of the various wavelength channels is implemented using space switches with either a crossbar fabric or a bus fabric, something that generates interrelation (crosstalk) between the channels. Large crossbar switches are lossy and their performance is optimum only for one wavelength channel.…”

Section: Introductionmentioning

confidence: 99%

“…Various optical cross connects architectures have been proposed [2][3][4][5][6][7]. In [2,[4][5][6], the crossconnection of the various wavelength channels is implemented using space switches with either a crossbar fabric or a bus fabric, something that generates interrelation (crosstalk) between the channels.…”

Section: Introductionmentioning

confidence: 99%

“…Space switches in the form of amplifier gate switch arrays [9][10][11] are attractive but again their complexity should be traded with performance [12] and their scalability per node is limited due to ASE accumulation to a switch size of 32 x 32 [9,10]. In [4][5][6], for each delivery-and-coupling switch, a power combiner is used with number of ports equal to the number of wavelength channels something that is scaling up the passive losses for a considerable number of channels. This architecture is suitable for a large number of links populated with a small number of wavelength channels something that under-utilize the fibre bandwidth.…”

Section: Introductionmentioning

confidence: 99%

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Optical cross-connect architecture for high-capacity WDM wavelength routed networks

Chandrasekar

2001

SPIE Proceedings

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A novel optical crossconnect architecture, capable for tens of terabit throughput and allowing the integration of wavelength and space switching, is presented for both WP and VWP networks. The architecture offers significant advantages in terms of crosstalk performance and node complexity. In the architecture, there are no crossovers and crosspoints. Therefore, the signal-to-crosstalk ratio per wavelength channel can be very high since each channel is processed independently from the others. This will also allow to introduce other all-optical techniques like adding/dropping of OTDM channels as well as optical regeneration. The proposed architecture is wavelength and link modular and particularly suitable for crossconnects with a very large number of wavelength channels. Performance aspects of a single as well as of a cascade of crossconnects have been simulated using a simulation tool.

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Optical Switching in Communications Networks

El-Bawab¹

Optical Switching

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Design and performance of an optical path cross-connect system based on wavelength path concept

Cited by 53 publications

References 22 publications

Architectural analysis of multiple fiber ring networks employing optical paths

Architectural analysis of multiple fiber ring networks employing optical paths

Optical cross-connect architecture for high-capacity WDM wavelength routed networks

Optical Switching in Communications Networks

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