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Applied Optics

Applied Optics


  • Vol. 41, Iss. 5 — Feb. 1, 2002
  • pp: 832–844

All-optical code-division-multiplexing technique supporting multirate data communications and local-area-network interconnections

Jian-Guo Zhang, Awnashilal B. Sharma, and Wing C. Kwong  »View Author Affiliations

Applied Optics, Vol. 41, Issue 5, pp. 832-844 (2002)

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An efficient all-optical code-division-multiplexing (AOCDM) technique is proposed to support multirate data communications and local-area-network (LAN) interconnections with multiple protocols. To achieve this goal, we use a strict optical orthogonal code (OOC) in multirate AOCDM systems to guarantee that both cross- and autocorrelation constraints are minimum (i.e., 1) for incoherent optical processing. In contrast, the use of a conventional OOC may result in correlation constraints of 2, which in turn can degrade system performance. Moreover, implementation issues on AOCDM systems are discussed. These include the design of low-cost optical transmitters and the trade-off among coherence time, spectral width, and pulse width for AOCDM systems. It is shown that multirate AOCDM systems have a high operation flexibility to support data communications and LAN interconnections of both equal and multiple bit rates. For multirate data transmissions, the proposed system can have a better bandwidth efficiency and a lower bit error rate than a system that uses a conventional OOC.

© 2002 Optical Society of America

OCIS Codes
(030.1670) Coherence and statistical optics : Coherent optical effects
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(140.5960) Lasers and laser optics : Semiconductor lasers
(230.1150) Optical devices : All-optical devices
(230.3120) Optical devices : Integrated optics devices

Original Manuscript: May 21, 2001
Revised Manuscript: October 29, 2001
Published: February 10, 2002

Jian-Guo Zhang, Awnashilal B. Sharma, and Wing C. Kwong, "All-optical code-division-multiplexing technique supporting multirate data communications and local-area-network interconnections," Appl. Opt. 41, 832-844 (2002)

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