Asynchronous transfer mode distribution network by use of an optoelectronic VLSI switching chip

Abstract

We describe a new optoelectronic switching system demonstration that implements part of the distribution fabric for a large asynchronous transfer mode (ATM) switch. The system uses a single optoelectronic VLSI modulator-based switching chip with more than 4000 optical input-outputs. The optical system images the input fibers from a two-dimensional fiber bundle onto this chip. A new optomechanical design allows the system to be mounted in a standard electronic equipment frame. A large section of the switch was operated as a 208-Mbits/s time-multiplexed space switch, which can serve as part of an ATM switch by use of an appropriate out-of-band controller. A larger section with 896 input light beams and 256 output beams was operated at 160 Mbits/s as a slowly reconfigurable space switch.

<title>Multibuffer shared ATM switching based on optical interconnects</title>

“…x1=e (4) For an output queueing model with n output ports and each port having average capacity S, the probability vector of the states that each queue possibly exists under the uniform traffic is P={Po'PI''Pk''Ps} (5) Each probability vector of all queues is in evidence identical. Since the real states of the m shared buffers are cirro-multiplication ofthe each probability vector of sub-state ,the probability vector of the m shared buffers is --, --, PQ =P*P*...*P=P (6) Where " " notes cirro-multiplication, Sk is the probability of queue being state k.…”

Two-dimensional parallel pipeline smart pixel array cellular logic (SPARCL) processors-chip design and system implementation

“…OE/VLSI technology has spawned the creation of several advanced free-space digital optoelectronic systems [8]- [14]. Perhaps the most sophisticated is a 256 256 ATM switch chip with more than 4000 optical I/O's operating at 200 Mb/s [15].…”

“…The slotted baseplate is an optomechanical system that allows easy and rugged setup of demonstration smart pixel systems. Improvements in packaging have further reduced the size of the optical system and have shown to be compatible with electronic chassis dimensions [15], [26], [27]. Fig.…”

Optoelectronic ATM switch using VCSEL and smart detector arrays

“…Figure [ 4] shows the layout ofthe demonstration system. The optical part includes a bulk lens 4-f system and the fan-out component.…”