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IEEE Communications Magazine

Issue 10 • Oct. 1989

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Displaying Results 1 - 6 of 6
  • High-capacity lightwave local are networks

    Publication Year: 1989, Page(s):20 - 26
    Cited by:  Papers (52)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (751 KB)

    The author presents an overview of fundamental considerations that guide and motivate research in this area. He explores the relationship between the bandwidth of the fiber, the available power and the loss in various network designs, and the throughput of networks as limited by the medium-access techniques and control mechanisms. He discusses two approaches to opening up the bottleneck that seem ... View full abstract»

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  • Multiwavelength networks and new approaches to packet switching

    Publication Year: 1989, Page(s):27 - 35
    Cited by:  Papers (65)  |  Patents (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (925 KB)

    The author shows how the bandwidth available through the use of multiwavelength optical-fiber technology can be used to achieve novel large-capacity switching systems to address anticipated switching bottlenecks. He does so by describing the features and network applications of a specific multiwavelength network, the Bellcore LAMBDANET packet switch. The discussion is then extended to a number of ... View full abstract»

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  • Optical heterodyne communications systems

    Publication Year: 1989, Page(s):36 - 41
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (735 KB)

    The potential of heterodyne systems is examined, beginning with a description of a typical optical heterodyne detection system. Sources for coherent systems are reviewed, and frequency agility is discussed. The problem of optical frequency determination and control is addressed. Two approaches for achieving polarization diversity reception are considered. Progress toward applying the techniques de... View full abstract»

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  • Wavelength-tunable and single-frequency semiconductor lasers for photonic communications networks

    Publication Year: 1989, Page(s):42 - 52
    Cited by:  Papers (24)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1205 KB)

    The present status of wavelength-tunable and single-frequency devices needed for the broadband integrated services digital network (BISDN) of the future is reviewed. The various systems applications and requirements and, in turn, the device parameters that are relevant to those requirements are described. The basic material and structural parameters of the lasers are discussed, and the fundamental... View full abstract»

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  • Wavelength-tunable optical filters: applications and technologies

    Publication Year: 1989, Page(s):53 - 63
    Cited by:  Papers (49)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1233 KB)

    The authors review noncoherent, frequency-tunable filter (receiver) technologies. They describe three basic mechanisms of wavelength filtering: filters that are based on the wavelength dependence of interferometric phenomena, with emphasis on Fabry-Perot interferometer filters; filters that are based on the wavelength dependence of coupling between optical fields (modes) induced by external pertur... View full abstract»

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  • Fiber-based local access network architectures

    Publication Year: 1989, Page(s):64 - 73
    Cited by:  Papers (15)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1141 KB)

    The attributes of the various architectural alternatives are discussed. Several systems proposed for the delivery of telephone service and/or distributive video services in the local access network are described. The status of the standardization of interfaces for the broadband integrated services digital network (BISDN) based on the synchronous optical network (SONET) and asynchronous transfer mo... View full abstract»

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IEEE Communications Magazine, considered by most to be their most important member benefit, provides timely information on all aspects of communications: monthly feature articles describe technology, systems, services, market trends, development methods, regulatory and policy issues, and significant global events.

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Huawei Technologies