A WDM cross-connected star topology for multihop lightwave networks

Irshid, Mansour I.; Kavehrad, M.

doi:10.1109/50.143083

Cited by 16 publications

(3 citation statements)

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“…Recently optical interconnections for communication networks and multiprocessor systems have received wide attention [3,6,7,12]. Wavelength division multiplexing (WDM) is a technique for sharing terahertz bandwidths of an optical fiber among multiple users.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Networks for Optical Communications

Lee

Liu²,

Jordan

2000

Journal of Parallel and Distributed Computing

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Section: Introductionmentioning

confidence: 99%

Hierarchical Networks for Optical Communications

Lee

Liu²,

Jordan

2000

Journal of Parallel and Distributed Computing

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“…1. If the underlying physical topology is an N x N broadcast star, then pN wavelengths are required for full connectivity between connected transceivers without frequency sharing [6,7]. Routers, only p wavelengths are needed, see Fig.…”

mentioning

confidence: 99%

Latin routers, design and implementation

Barry

Humblet

1993

J. Lightwave Technol.

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“…Since each ONU only receives its own wavelength, WDM-PON has better privacy and better scalability. However, WDM devices are significantly more expensive, which makes WDM-PONs economically less attractive at this moment[16].…”

mentioning

confidence: 99%

Flexible optical fiber access networks using wavelength selective switches

Htwe

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The optical switching crosstalk is the important considerable issue in the optical fiber communication system, it tends to the signal distortion and decreasing of the system performance. This dissertation research is proposed a guideline to design a flexible fiber to the x (FTTx) system based on wavelength division multiplexing passive optical network (WDM-PON) combining with wavelength selective switches (WSSs). For the system configuration, the 4 wavelengths-10 ONUs system with the data bit rate of 10-Gbps/? and 40-Gbps/ ? are studied in this dissertation. Moreover, to be active switching, the dynamic wavelength bandwidth allocation (DWBA) controller is used to control WSSs. The modulation format NRZ-OOK is applied for 10 Gbps/? system and the advanced modulation format NRZ-DQPSK is applied for 40 Gbps/? system. The investigation of this dissertation is mainly focus on the improvement of system performance such as the minimum received optical power and power budget related with bit error rate(BER). In order to improve the system performance, the signal distortion reduction methodology is applied by adding the proper delay times in switching characteristics of 3 different types of WSS. The results of investigation come from only the computer simulation by using the commercial OptiSystem software without performing real experiments. The maximum reach of data transmission is limited to 20 km over ITU-T G652.D SMF fiber with the limited BER=10?? (without using forward error correction: FEC). As the results based on worst case BER, the received optical power for both system designs are improved after providing proper delay times in switching characteristics of WSS. Obviously, the power budget is improved by about 3 dB after providing 3? delay time of electro-optic switch for both system designs.

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A WDM cross-connected star topology for multihop lightwave networks

Cited by 16 publications

References 25 publications

Hierarchical Networks for Optical Communications

Hierarchical Networks for Optical Communications

Latin routers, design and implementation

Flexible optical fiber access networks using wavelength selective switches

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