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Scalable optical interconnect architecture using AWGR-based TONAK LION switch with limited number of wavelengths
Authors
V Akella
C Mineo
+5 more
CJ Nitta
R Proietti
Y Yin
SJB Yoo
R Yu
Publication date
15 December 2013
Publisher
eScholarship, University of California
Abstract
This paper analyzes the scalability in arrayed waveguide grating router (AWGR)-based interconnect architectures and demonstrates active AWGR-based switching using a distributed control plane. First, the paper analyses an all-to-all single AWGR passive interconnection with
N
N
N
nodes and proposes a new architecture that overcomes the scalability limitation given by wavelength registration and crosstalk, by introducing multiples of smaller AWGRs
(
W
(W
(
W
×
W
)
W)
W
)
operating on a fewer number of wavelengths
(W < N)
. Second, this paper demonstrates active AWGR switching with a distributed control plane, to be used when the size of the interconnection network makes the all-to-all approach using passive AWGRs impractical. In particular, an active AWGR-based TONAK switch is introduced. TONAK combines an all-optical NACK technique, which removes the need for electrical buffers at the switch input/output ports, and a TOKEN technique, which enables a distributed all-optical arbiter to handle packet contention. The experimental validation and performance study of the AWGR-based TONAK switch is presented, demonstrating the feasibility of the TONAK solution and the high throughput and low average packet latency for an up to 75% offered load. © 2013 IEEE
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Last time updated on 05/10/2022