NDLI: AWG-based non-blocking Clos networks

Content Provider	ACM Digital Library
Author	Lee, Tony T. Hu, Weisheng Ye, Tong
Copyright Year	2015
Abstract	The three-stage Clos networks remain the most popular solution to many practical switching systems to date. The aim of this paper is to show that the modular structure of Clos networks is invariant with respect to the technological changes. Due to the wavelength routing property of arrayed-waveguide gratings (AWGs), non-blocking and contention-free wavelength-division-multiplexing (WDM) switches require that two calls carried by the same wavelength must be connected by separated links; otherwise, they must be carried by different wavelengths. Thus, in addition to the non-blocking condition, the challenge of the design of AWG-based multistage switching networks is to scale down the wavelength granularity and to reduce the conversion range of tunable wavelength converters (TWCs). We devise a logic scheme to partition the WDM switch network into wavelength autonomous cells and show that the wavelength scalability problem can be solved by recursively reusing similar, but smaller, set of wavelengths in different cells. Furthermore, we prove that the rearrangeably non-blocking (RNB) condition and route assignments in these AWG-based three-stage networks are consistent with that of classical Clos networks. Thus, the optimal AWG-based non-blocking Clos networks also can achieve 100% utilization when all input and output wavelength channels are busy.
Starting Page	491
Ending Page	504
Page Count	14
File Format	PDF
ISSN	10636692
DOI	10.1109/TNET.2014.2300899
Volume Number	23
Issue Number	2
Journal	IEEE/ACM Transactions on Networking (TON)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2015-04-01
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Clos network Arrayed-waveguide grating (AWG) Rearrangeably non-blocking (RNB) Tunable wavelength converter (TWC) Wavelength division multiplexing (WDM)
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Networks and Communications Software Computer Science Applications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

WDM Passive Optical Networks With Wavelength Sharing

Scalable Passive Optical Network Architecture for Reliable Service Delivery

Self-Routing Nonblocking WDM Switches Based on Arrayed Waveguide Grating

Constructions and analyses of nonblocking WDM switches based on arrayed waveguide grating and limited wavelength conversion

Perencanaan Arrayed Waveguide Grating (AWG) Untuk Wavelength Division Multiplexing (WDM) Pada C-Band

Minimizing the Arrayed Waveguide Grating Cost and the Optical Cable Cost in Deploying WDM Passive Optical Networks

Non-Blocking WDM Switches Based on Arrayed Waveguide Grating and Shared Wavelength Conversion

Multipassive-star-coupler hub for metro WDM networks

WDM optical interconnects: a balanced design approach

AWG-based non-blocking Clos networks

Similar Documents

WDM Passive Optical Networks With Wavelength Sharing

Scalable Passive Optical Network Architecture for Reliable Service Delivery

Self-Routing Nonblocking WDM Switches Based on Arrayed Waveguide Grating

Constructions and analyses of nonblocking WDM switches based on arrayed waveguide grating and limited wavelength conversion

Perencanaan Arrayed Waveguide Grating (AWG) Untuk Wavelength Division Multiplexing (WDM) Pada C-Band

Minimizing the Arrayed Waveguide Grating Cost and the Optical Cable Cost in Deploying WDM Passive Optical Networks

Non-Blocking WDM Switches Based on Arrayed Waveguide Grating and Shared Wavelength Conversion

Multipassive-star-coupler hub for metro WDM networks

WDM optical interconnects: a balanced design approach

AWG-based non-blocking Clos networks