Ultrafast photonic ATM switch with optical output buffers

Shimazu, Yoshihiro; Tsukada, M.

doi:10.1109/50.120582

Cited by 72 publications

(11 citation statements)

References 16 publications

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“…Compared with using pure TDM approaches [34] our approach requires a much more relaxed speed performance for components used in the switch. This helps to reduce cost and complexity for future scaling up.…”

Section: Discussionmentioning

confidence: 99%

An optical packet switch based on WDM technologies

Choa

Zhao

et al. 2005

J. Lightwave Technol.

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Dense Wavelength-division multiplexing (DWDM) technology offers tremendous transmission capacity in optical fiber communications. However, switching and routing capacity lags behind the transmission capacity, since most of today's packet switches and routers are implemented using slower electronic components. Optical packet switches are one of the potential candidates to improve switching capacity to be comparable with optical transmission capacity. In this paper, we present an optically transparent ATM (OPATM) switch that consists of a photonic front-end processor and a WDM switching fabric. A WDM loop memory is deployed as a multi-ported shared-memory in the switching fabric. The photonic front-end processor performs the cell delineation, VPI/VCI overwriting, and cell synchronization functions in the optical domain under the control of electronic signals. The WDM switching fabric stores and forwards aligned cells from each input port to the appropriate output ports under the control of an electronic route controller. We have demonstrated with experiments the functions and capabilities of the front-end processor and the switching fabric at the header-processing rate of 2.5Gb/s. Other than ATM, the switching architecture can be easily modified to apply to other types of fixed-length payload formats with different bit rates. Using this kind of photonic switches to route information, an optical network has the advantages of bit rate, wavelength, and signal-format transparencies. Within the transparency distance, the network is capable of handling a widely heterogeneous mix of traffic, including even analog signals.

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Section: Discussionmentioning

confidence: 99%

An optical packet switch based on WDM technologies

Choa

Zhao

et al. 2005

J. Lightwave Technol.

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“…Since traditional optical phase lock loops cannot provide such a high speed, fast self-synchronization schemes begin to attract much attention of the researchers. Up to now, several self-synchronization schemes, have been proposed, which implant a special packet-level clock pulse with wavelength [4], polarization [5], bit period [6] and intensity [7] and different from the rest optical pulses in the packet. However, in practice, self-synchronization schemes without introducing any special packet-level clock pulse are preferable.…”

Section: Introductionmentioning

confidence: 99%

A novel scheme of packet-level self-synchronization for slotted optical packet-switched networks

et al. 2004

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Proposed in this paper is a novel packet-level self-synchronization scheme for slotted optical packet-switched networks (OPNs), where a clock denoting the beginning of each packet is extracted to perform address recognition, ultra-fast optical sampling, or payload delineation. The effect of self-phase modulation (SPM) in semiconductor optical amplifier (SOA) and the interfering characteristics of Mach-Zehnder Interferometer (MZI) are combined to make the proposal simple, fast and integrable, with no special treatment at wavelengths, polarization, intensity, or bit-period of the marker pulses.

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“…Self-synchronization is a vital function in ultrafast optical time multiplexing (OTDM) and optical packet-switched networks [1]- [7]. With self-synchronization, instead of performing clock recovery, a local access node on the network selects a single pulse from an incoming data packet, which can be utilized as a seed pulse to generate various local bit patterns to perform address recognition, ultra-fast optical sampling, or payload delineation.…”

Section: Introductionmentioning

confidence: 99%

A novel self-synchronization scheme for optical packet-switched networks using semiconductor optical amplifier in symmetric Mach-Zehnder interferometer

Niu

Zhang

2005

SPIE Proceedings

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Proposed in this paper is a novel packet-level self-synchronization scheme with Semiconductor optical amplifier based symmetric Mach-Zehnder interferometer (SOA-MZI). The effect of cross-phase modulation (XPM) and cross-gain modulation (XGM) in SOA and the interfering characteristics of MZI are combined to make the proposal simple, fast and integrable, with no special treatment of the marker pulses. Through numerical analysis and properly design of the parameters, more than 20dB intensity contrast ratio of 100G/s RZ pseudorandom bit sequence can be achieved

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Ultrafast photonic ATM switch with optical output buffers

Cited by 72 publications

References 16 publications

An optical packet switch based on WDM technologies

An optical packet switch based on WDM technologies

A novel scheme of packet-level self-synchronization for slotted optical packet-switched networks

A novel self-synchronization scheme for optical packet-switched networks using semiconductor optical amplifier in symmetric Mach-Zehnder interferometer

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