Code-based all-optical routing using two-level coding

M. Meenakshi, I. Andonovic

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Code-based all optical routing employing a two-level-coding scheme is proposed. The first level of coding is employed to establish connections between users within a local area network; a second level of coding provides routing/interconnectivity between networks. The limitations due to physical-layer impairments, such as relative intensity noise (RIN) of the optical source, the signal-dependent shot noise, optical beat interference (OBI), and thermal noise at the receiver, which are some of the fundamental issues in the design of practical optical code division multiple access (CDMA) systems, are analyzed for the two-level scheme. The throughput in terms of 'packets/time slot' offered by the scheme is also compared with that of the wavelength division multiple access (WDMA) system. The system capacity in WDMA is limited by the number of available wavelengths; optical CDMA, on the other hand, has many codes (user addresses), but the throughput is limited by multiple user interference, OBI, and RIN. System designs that overcome these effects and thereby improve the throughput are suggested.
LanguageEnglish
Pages1627-1637
Number of pages10
JournalJournal of Lightwave Technology
Volume24
Issue number4
DOIs
Publication statusPublished - 2006

Fingerprint

coding
multiple access
code division multiple access
noise intensity
interference
division
synchronism
wavelengths
local area networks
thermal noise
impairment
shot noise
slots
systems engineering
receivers

Keywords

  • optical beat interference
  • pptical fiber communication
  • optical telecommunication
  • multiplexing
  • wireless telecommunication

Cite this

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title = "Code-based all-optical routing using two-level coding",
abstract = "Code-based all optical routing employing a two-level-coding scheme is proposed. The first level of coding is employed to establish connections between users within a local area network; a second level of coding provides routing/interconnectivity between networks. The limitations due to physical-layer impairments, such as relative intensity noise (RIN) of the optical source, the signal-dependent shot noise, optical beat interference (OBI), and thermal noise at the receiver, which are some of the fundamental issues in the design of practical optical code division multiple access (CDMA) systems, are analyzed for the two-level scheme. The throughput in terms of 'packets/time slot' offered by the scheme is also compared with that of the wavelength division multiple access (WDMA) system. The system capacity in WDMA is limited by the number of available wavelengths; optical CDMA, on the other hand, has many codes (user addresses), but the throughput is limited by multiple user interference, OBI, and RIN. System designs that overcome these effects and thereby improve the throughput are suggested.",
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}

Code-based all-optical routing using two-level coding. / Meenakshi, M.; Andonovic, I.

In: Journal of Lightwave Technology, Vol. 24, No. 4, 2006, p. 1627-1637.

Research output: Contribution to journalArticle

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AU - Meenakshi, M.

AU - Andonovic, I.

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AB - Code-based all optical routing employing a two-level-coding scheme is proposed. The first level of coding is employed to establish connections between users within a local area network; a second level of coding provides routing/interconnectivity between networks. The limitations due to physical-layer impairments, such as relative intensity noise (RIN) of the optical source, the signal-dependent shot noise, optical beat interference (OBI), and thermal noise at the receiver, which are some of the fundamental issues in the design of practical optical code division multiple access (CDMA) systems, are analyzed for the two-level scheme. The throughput in terms of 'packets/time slot' offered by the scheme is also compared with that of the wavelength division multiple access (WDMA) system. The system capacity in WDMA is limited by the number of available wavelengths; optical CDMA, on the other hand, has many codes (user addresses), but the throughput is limited by multiple user interference, OBI, and RIN. System designs that overcome these effects and thereby improve the throughput are suggested.

KW - optical beat interference

KW - pptical fiber communication

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KW - wireless telecommunication

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