Coarse WDM/CDM/TDM concept for optical packet transmission in metropolitan and access networks supporting 400 channels at 2.5 Gb/s peak rate

Pfeiffer, Th.; Kissing, J.; Elbers, Joerg-Peter; Deppisch, B.; Witte, M.; Schmuck, H.; Voges, E.

doi:10.1109/50.908792

Cited by 34 publications

(11 citation statements)

References 16 publications

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“…The first category is the design and the performance analysis of code-based optical routers and switches in all-optical switching networks [115][116][117][118][119][120][121][122]. In addition to the core routing networks, many researchers have demonstrated and studied the performance and effectiveness of the OCDMA applications in local area and access networks, which constitute the second category [123][124][125][126][127][128][129][130][131][132][133][134][135][136][137][138]. And finally the third category consists of some emerging research to devise, analyze, and study the feasibility of employing OCDMA to set up wireless optical networks for both indoor and free-space environments [139][140][141][142][143][144][145][146][147][148].…”

Section: Applications Of Ocdma In Data Networkmentioning

confidence: 99%

“…There are many research groups that have addressed the design, and have examined the network or data link layer issues, and have proposed novel protocols for fiberbased networks [123][124][125][126][127][128][129][130][131][132][133][134][135][136][137][138]. Hsu and Li [123] have examined OCDMA techniques in a slotted packet network, with both time-and frequency-hopping schemes.…”

Section: B Ocdma-based Fiber Lan and Access Networkmentioning

confidence: 99%

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Emerging OCDMA communication systems and data networks [Invited]

Salehi

2007

J. Opt. Netw.

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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 equal to 2 or 3, which have a much larger cardinality compared to OOCs with = 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 indepth 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-divisionmultiple-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. clever encoding and decoding mechanisms that are essential for future all-optical communication systems an...

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Section: Applications Of Ocdma In Data Networkmentioning

confidence: 99%

Section: B Ocdma-based Fiber Lan and Access Networkmentioning

confidence: 99%

Emerging OCDMA communication systems and data networks [Invited]

Salehi

2007

J. Opt. Netw.

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“…It offers multiple access capability by allocating a unique code to each user. Over the past two decades, much research work has been done in the establishment of optical computer interconnection and optical digital transmission systems using CDMA technologies [1][2][3][4][5][6][7][8][9]. Optical implementation of CDMA, called optical CDMA (OCDMA), can utilize the vast bandwidth of optical fiber channels, and thus easily satisfy the bandwidth requirements of the spread spectrum transmission which is the basis of a CDMA technology.…”

Section: Introductionmentioning

confidence: 99%

A Novel Optical Multiplexing Approach for Computer Interconnection and Optical Digital Transmission

Luo¹,

Chen²

2009

2009 WRI World Congress on Computer Science and Information Engineering

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Here we propose a novel optical multiplexing approach by means of the dispersion matching technique. Before transmission, the optical signals in pulse format from different users spread along the time axis to different scales by using artificial dispersion components. At the receiver side, the target signal can be retrieved by using the reverse dispersion component which only recovers the original target pulse shape. After the optical to electrical conversion, the energy of the interference is concentrated on lower part of the frequency domain while the energy of the target signal covers much broader. Thus, one can use filters to distinguish the target signal and eliminate the interference. Numerical analysis is performed with respect to the interference filtering and impairment of fiber dispersion itself. Besides, the comparison with OCDMA technology is also depicted. This multiplexing approach is very promising for applications in local area computer networks and short range communication systems.

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“…Optical CDMA (OCDMA) has for a long time been the subject of research due to its inherent ability to support asynchronous burst communications. Initially OCDMA was employed for local area [1], then for access network applications [2], [3] and currently for emerging optical networks such as generalized multiprotocol label switching, fiber-to-home (FTTH) or fiber-to-the-curb (FTTC) [4]- [6].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Two Dimensional Wavelength/ Time Encoding System for Optical CDMA Networks

Fakih¹,

Panbude²,

Jagtap³

2014

IJCCE

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Abstract-Optical code-division multiple access (OCDMA) combines the large bandwidth of the fiber medium with the flexibility of the CDMA technique to achieve the high-speed connectivity.OCDMA has the potential to support asynchronous, bursty communications. The establishment of OCDMA needs to overcome the cardinality problem of 1-D codes. In order to increase the number of users, unipolar codes with larger capacity need to be designed. In this paper we have analyzed the performance of an incoherent OCDMA scheme based on wavelength/time codes. This paper shows that 2-D codes have better spectrum efficiency than 1-D OCDMA codes of the same cardinality.Index Terms-Code-division multiple access (CDMA), unipolar codes, wavelength hopping/time spreading (W/T), encoding, cardinality, multiple access interference (MAI).

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Coarse WDM/CDM/TDM concept for optical packet transmission in metropolitan and access networks supporting 400 channels at 2.5 Gb/s peak rate

Cited by 34 publications

References 16 publications

Emerging OCDMA communication systems and data networks [Invited]

Emerging OCDMA communication systems and data networks [Invited]

A Novel Optical Multiplexing Approach for Computer Interconnection and Optical Digital Transmission

Performance Analysis of Two Dimensional Wavelength/ Time Encoding System for Optical CDMA Networks

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