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مقاله

Emerging Optical CDMA Techniques and Applications

Jawad A. Salehi

چکیده

In this paper we present an in-depth review on the trends and the directions taken by the researchers worldwide in Optical Code Division Multiple Access (OCDMA) systems. We highlight those trends and features that are believed to be essential to the successful introduction of various OCDMA techniques in communication systems and data networks in near future. In particular we begin by giving a comprehensive review on the constructions of optical orthogonal codes (OOC). In our system study we first focus and discuss on various OCDMA techniques such as 1-D, 2-D and spectrally-encoded ultrashort light pulse CDMA, and discuss their pros and cons. A comprehensive discussion takes place on all important aspects of each OCDMA technique. In particular, we elaborate on enabling technologies that are needed prior to full scale consideration of OCDMA in communication systems. We extend our discussion to various data networks, including fiber-based and wireless to indicate the directions and the applications that OCDMA systems are considered for. It is believed that OCDMA once fully developed and matured will be an inseparable part of advanced optical communication systems and networks due to its various desirable features and functionalities, in not so distant future.

شکل‌ها (۶)

  • شکل، صفحه‌ی ۴
    صفحه‌ی ۴
  • Fig. 9 Proposed scheme for optical CDMA based on spectral encoding and decoding of ultrashort light pulses Jepsen et al. and Tsuda et al. respectively. encoding and decoding of ultrashort light pulses. FBG- The all-fiber spectral en/decoder based on FBG
    Fig. 9 Proposed scheme for optical CDMA based on spectral encoding and decoding of ultrashort light pulses Jepsen et al. and Tsuda et al. respectively. encoding and decoding of ultrashort light pulses. FBG- The all-fiber spectral en/decoder based on FBGصفحه‌ی ۹
  • Fig. 10 Virtually Imaged Phased Array (VIPA) setup
    Fig. 10 Virtually Imaged Phased Array (VIPA) setupصفحه‌ی ۹
  • Fig. 12 Fiber-To-The-Home (FTTH) architecture and services discussions on OCDMA over WDM PON, and analyzed the system architecture and crosstalk in the presence of In 2003, Shalaby began a series of articles on the yp WDM channels. It was shown that OCDMA over WDM
    Fig. 12 Fiber-To-The-Home (FTTH) architecture and services discussions on OCDMA over WDM PON, and analyzed the system architecture and crosstalk in the presence of In 2003, Shalaby began a series of articles on the yp WDM channels. It was shown that OCDMA over WDMصفحه‌ی ۱۳
  • Fig. 13 Schematic of a typical wireless optical CDMA LAN (a) uplink and (b) downlink structure [2] J. Ratnam, “Optical CDMA in broadband communication-scope and applications,” J. Op.
    Fig. 13 Schematic of a typical wireless optical CDMA LAN (a) uplink and (b) downlink structure [2] J. Ratnam, “Optical CDMA in broadband communication-scope and applications,” J. Op.صفحه‌ی ۱۴
  • Fig. 13 Schematic of a typical wireless optical CDMA LAN (a) uplink and (b) downlink structure [2] J. Ratnam, “Optical CDMA in broadband communication-scope and applications,” J. Op.
    Fig. 13 Schematic of a typical wireless optical CDMA LAN (a) uplink and (b) downlink structure [2] J. Ratnam, “Optical CDMA in broadband communication-scope and applications,” J. Op.صفحه‌ی ۱۴

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