Feature Issue on Optical Code Division Multiple Access

I present an in-depth review of the trends and the directions taken by researchers worldwide in optical code-division multiple-access (OCDMA) systems. I highlight those trends and features that I believe are essential to the successful introduction of various OCDMA techniques in communication systems and data networks in the near future. In particular I begin by giving a comprehensive review of the construction of optical orthogonal codes (OOCs). Specifically I discuss the recently developed algorithms that are based on matrix algebra, which simplify and enhance the efficiencies of algorithms in OOC generation. In communication systems studies I first focus on and discuss various OCDMA techniques, such as incoherent and coherent OCDMA. A comprehensive discussion takes place on all important aspects of each OCDMA technique. In particular, I elaborate on enabling technologies that are needed prior to full scale consideration of OCDMA in communication systems. For incoherent OCDMA the technique is categorized into two distinguished techniques, namely, 1D and 2D OCDMA. For each technique I discuss the various receiver structures proposed to date. In particular I discuss a recently introduced powerful receiver structure based on optical AND logic gate elements. Based on this receiver structure I conclude that in many practical applications, OOCs with a cross-correlation value λ equal to 2 or 3, which have a much larger cardinality compared to OOCs with λ=1, perform much better. Many fundamental issues, including architectural consideration of multiple amplifiers, various acquisition algorithms, and advanced signaling methods, such as pulse position modulation, are discussed. For coherent OCDMA or spectrally encoded ultrashort light pulse OCDMA, I begin by having an in-depth discussion on the key and enabling technologies that are essential in the successful implementation of this very important and extremely powerful technique. In particular on the encoder-decoder side I present discussions on various key device technologies such as virtually imaged pulsed array, fiber Bragg gratings, and arrayed waveguide gratings. On the receiver side I elaborate on various nonlinear detection schemes used in such OCDMA networks. I will present an analytical framework on the above nonlinear detection schemes and discuss their pros and cons. I extend the discussion to various data networks. In particular I will discuss applications such as wireless OCDMA LAN, free-space OCDMA, fiber-to-the-home, and other code-division-multiple-access-based packet communication networks using label addressing and processing techniques to indicate the directions and the applications for which OCDMA systems are considered. It is believed that in the not so distant future 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.

© 2007 Optical Society of America

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Related Journal Articles

• Technological challenges on the road toward transparent networking (JON)
• 100-Gb/s undersea transmission with high spectral eff iciency using pre-filtered QPSK modulation format (Invited Paper) (COL)
• 16QAM transmission with 5.2 bits/s/Hz spectral efficiency over transoceanic distance (OE)
• Modulation format identification in heterogeneous fiber-optic networks using artificial neural networks (OE)
• Statistical moments-based OSNR monitoring for coherent optical systems (OE)

Related Conference Papers

• 32Tb/s (320x114Gb/s) PDM-RZ-8QAM Transmission over 580km of SMF-28 Ultra-Low-Loss Fiber
• 32Tb/s (320x114Gb/s) PDM-RZ-8QAM Transmission over 580km of SMF-28 Ultra-Low-Loss Fiber
• 13.5-Tb/s (135 x 111-Gb/s/ch) No-Guard-Interval Coherent OFDM Transmission over 6,248 km Using SNR Maximized Second-Order DRA in the Extended L-Band
• 13.5-Tb/s (135 x 111-Gb/s/ch) No-Guard-Interval Coherent OFDM Transmission over 6,248 km Using SNR Maximized Second-Order DRA in the Extended L-Band
• 72x100Gb/s Transmission over Transoceanic Distance, Using Large Effective Area Fiber, Hybrid Raman-Erbium Amplification and Coherent Detection
• 72x100Gb/s Transmission over Transoceanic Distance, Using Large Effective Area Fiber, Hybrid Raman-Erbium Amplification and Coherent Detection
• 1-Tb/s per Channel Coherent Optical OFDM Transmission with Subwavelength Bandwidth Access
• 1-Tb/s per Channel Coherent Optical OFDM Transmission with Subwavelength Bandwidth Access
• Real-Time Coherent Optical OFDM Receiver at 2.5-GS/s for Receiving a 54-Gb/s Multi-Band Signal
• Real-Time Coherent Optical OFDM Receiver at 2.5-GS/s for Receiving a 54-Gb/s Multi-Band Signal