5-Tbit/s frame-based ATM switching system using 2.5-Gbit/s×8 optical WDM links

Yamakoshi, K.; Nakai, Kohei; Matsuura, N.; Oki, Eiji; Kawano, R.; Yamanaka, Naoaki

doi:10.1109/icc.2001.937246

Cited by 1 publication

(2 citation statements)

References 5 publications

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“…Since the AWG is a passive device, the reconfiguration of this space switch is solely determined by the active wavelength tuning of the input tunable laser. The wavelength switching can be reduced to a couple of nanoseconds by rapidly changing the control currents for multiple sessions in tunable semiconductor lasers [26]- [28].…”

Section: Photonic Switch Fabric (Psf)mentioning

confidence: 99%

“…Another alternative for building a photonic switch fabric is to combine tunable lasers with an array waveguide grating (AWG) [22]- [25] device as a space switch. The advantage of this approach is the rapid switching speed achieved by tuning the wavelength of the lasers at a nanosecond speed [26]- [28]. When cascading the AWG-based devices for a multistage switch fabric, wavelength conversion becomes an essential element because the switching property of the AWG depends on the change of the input wavelengths [29].…”

Section: Introductionmentioning

confidence: 99%

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Petastar: a petabit photonic packet switch

Chao¹,

Deng

Jing³

2003

IEEE J. Select. Areas Commun.

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Abstract-This paper presents a new petabit photonic packet switch architecture, called PetaStar. Using a new multidimensional photonic multiplexing scheme that includes space, time, wavelength, and subcarrier domains, PetaStar is based on a three-stage Clos-network photonic switch fabric to provide scalable large-dimension switch interconnections with nanosecond reconfiguration speed. Packet buffering is implemented electronically at the input and output port controllers, allowing the central photonic switch fabric to transport high-speed optical signals without electrical-to-optical conversion. Optical time-division multiplexing technology further scales port speed beyond electronic speed up to 160 Gb/s to minimize the fiber connections. To solve output port contention and internal blocking in the three-stage Clos-network switch, we present a new matching scheme, called c-MAC, a concurrent matching algorithm for Clos-network switches. It is highly distributed such that the input-output matching and routing-path finding are concurrently performed by scheduling modules. One feasible architecture for the c-MAC scheme, where a crosspoint switch is used to provide the interconnections between the arbitration modules, is also proposed. With the c-MAC scheme, and an internal speedup of 1.5, PetaStar with a switch size of 6400 6400 and total capacity of 1.024 petabit/s can be achieved at a throughput close to 100% under various traffic conditions. Index Terms-Clos network, optical time-division multiplexing (OTDM), packet scheduling, photonic switch.

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Section: Photonic Switch Fabric (Psf)mentioning

confidence: 99%