The number of stations attached to a single optical passive star is limited by current state of the art in optical technology. Also, the wavelength range of tunable optical transceivers is limited by current technology. Many high performance computing applications require the use of large size regular topologies for communication between computing nodes. Scalability of passive star networks built with these two limitations becomes an important issue for building larger networks. This is the subject of our study in this paper. In a previous related work we explored the design issues for networks built on a single passive star employing transceivers of a limited tuning range. Here we extend that study by considering the problem of connecting several optical passive stars, each embedded with a given virtual topology, to create larger aggregate networks. The design issues are analyzed and a number of design rules are proposed for building such aggregate networks. We study the scalability of embedded optical passive stars by considering the most commonly employed virtual topologies - complete graph, mesh and hypercube.
Bibliographical noteFunding Information:
Sc. (Tech.) degree in Computer Science from the Birla Institute of Technology and Science, Pilani, India, in 1988, and the Pd.D. degree in Computer Science from the University of Minnesota, Minneapolis, in 1988. He has been with the Honeywell Technology Center in Minneapolis since 1993 where he is currently a senior Research Scientist. At Honeywell he has been involved in a number of projects in the application of multimedia and high-speed networking technologies to hard real-time systems used in process control and individual automation. His research interests include WDM optical networks, high speed networking, real-time multimedia and performance evaluation. He has over 25 publications in those areas. Dr. Pavan was the recipient of the I.B.M. Graduate Fellowship for his Ph.D. thesis work and the National Talent Search Scholarship from the Government of India. Dr Pavan is a member of the ACM and the IEEE.
Copyright 2018 Elsevier B.V., All rights reserved.
- Fiber optic networks
- Network scalability
- Optical passive star
- Tunable transmitter
- Wavelength division multiplexing