1 / 19

ECE 678 Project Optical Switching Router

ECE 678 Project Optical Switching Router. Group Member Yun Zhao Yeliang Zhang Instructor Dr. Martinez Tuesday, March 26, 2002. Problem Statement. The big won’t eat the small, the fast will beat the slow (J. Chambers ---- Cisco) All-optical networks provide high speed internet connection

devaki
Télécharger la présentation

ECE 678 Project Optical Switching Router

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ECE 678 ProjectOptical Switching Router • Group Member • Yun Zhao • Yeliang Zhang • Instructor • Dr. Martinez Tuesday, March 26, 2002

  2. Problem Statement • The big won’t eat the small, the fast will beat the slow (J. Chambers ---- Cisco) • All-optical networks provide high speed internet connection • All-optical networks = DWDM + optical switching router + GMPLS • The optical switch is an important and core part of all-optical IP networks

  3. Problem Statement (continue) • Current available types of optical switches: • OEO • OOO • Current shipping products are ALL OEO • In the future, we will see OOO

  4. What is an OEO switch? • This is an OEO switch • Incoming signals are converted from Optical to Electrical • Signal is switched electrically • Outgoing signals are converted back to optical

  5. OEO Optical Switch CDR Clock and Data Recovery P Header Processing ACS Automatic Crosspoint Selection

  6. How Big Can We Make OEO Optical Switches? Current available 64x64 and 32x32 electrical crosspoint switches • Each port of the crosspoint runs at 2.5Gb/s So, how do we make large switches from these?

  7. Large OEO Switches Using Smaller Martices • 3-stage Clos Matrix

  8. How Big Can We Make OEO Optical Switches? • Using multi-stage Clos non-blocking architecture Using 32x32 switch => 512x512 Using 64x64 switch => 2048x2048 Using 128x128 switch => 8192x8192(20 Terabits/sec)

  9. When Does an All-Optical Switch(OOO) Make Sense? • Chief virtue of an optical core: • Complexity is a flat function, independent of bit rate • 2.5 Gb/s, 10 Gb/s, 40 Gb/s… • For 40 Gb/s optical fabrics win vs. electrical • For 10 Gb/s optical fabrics may win • Below that electronics is going to be tough to beat • So, beyond 20 Tb/s we will need optical cores

  10. Scalability Crossover Point • Optical Switch Scaling (from Tellium)

  11. Optical Switch Component • Optical crossconnect • Optical add-drop multiplexer (OADM) • Wavelength converter • Tunable laser

  12. MEMS (Micro-Electro-Mechanical System)

  13. Label Switch Router Optical Node Control Optical Network Core Network Label Edge Router Edge Networks Edge Networks Edge Networks Edge Networks Optical Switching Router • OSR : Optical Switch Architecture + GMPLS Protocol

  14. Objective • Propose an architecture draft for optical switching router • Get familiar with structure of the optical switching router and the mechanism of optical switching (including GMPLS) • Optical switching router components, control plane, their function and interaction

  15. Research Methodology • Survey on topic of optical switching • Discuss optical switching router architecture • Discuss models for optical layer control and signaling • Case study of commercial optical switching products

  16. Project Concentration • Optical processing • Optical devices (MEMS, TOADM, FILTER etc.) • Control plane • GMPLS

  17. Expected Result • Expected to • Know structure of the optical switching router and how it works • Grasp the concept of optical switching router physical implementation • Understand components of the optical switching router and their function

  18. References

  19. Questions?

More Related