1. Performance Monitoring in Photonic Networks John Drake Chromisys

2. 3/22/00Performance Monitoring in Photonic Networks in Support of MPL(amda)S2 Current Networking Cross Connect SONET Muxes DWDM Cross Connect SONET Muxes DWDM PacketSONETPhotonsSONETPacket Routers

3. 3/22/00Performance Monitoring in Photonic Networks in Support of MPL(amda)S3 Photonic Networking Routers PacketPhotonsPacket Photonic Switch Photonic Switch Photonic Switch                                                

4. 3/22/00Performance Monitoring in Photonic Networks in Support of MPL(amda)S4 Photonic Network Model Router ATM switch PXC Router ATM switch PXC OADM PXC Photonic Switch DWDM Dense Wavelength Division Multiplexer OADM Optical Add Drop Multiplexer Control Plane Flows Proprietary Signaling DWDM       OXC

5. 3/22/00Performance Monitoring in Photonic Networks in Support of MPL(amda)S5 Photonic Network Model Advantages Supports Overlay Model and Peer Model Overlay  Photonic Switch computes the path  Network-level abstraction Peer  Router computes the path (The router has enough information about the characteristics of the optical devices/network)  Link-level abstraction

6. 3/22/00Performance Monitoring in Photonic Networks in Support of MPL(amda)S6 Challenges of Photonic Networks Optical layer information not available SONET  Is unaware of optics  Makes network opaque Digital wrappers don’t offer a solution either Provisioning, switching, management and monitoring functions need to move to optical domain

7. 3/22/00Performance Monitoring in Photonic Networks in Support of MPL(amda)S7 Proposed Optical Parameters Dispersion (chromatic and Dispersion Mode) Optical power level and signal-to-noise ratio (OSNR) Bit rate Q-Factor Wavelength registration Wavelength selective component drift Optical cross talk Optical power transients Bit error rate Jitter Insertion loss

8. 3/22/00Performance Monitoring in Photonic Networks in Support of MPL(amda)S8 Control Plane Control plane used to communicate, monitoring is done on the actual wavelength Flows to be supported  Router - PXC  PXC – DWDM  PXC - PXC DWDM systems can continue to use proprietary implementations ([de]mux – oamp – oadm) Out-of-band on dedicated standard ITU channel

9. 3/22/00Performance Monitoring in Photonic Networks in Support of MPL(amda)S9 For Further Study Final List of optical parameters Agreed techniques for measurements of optical parameters Synthesis of optical parameters for link state database and network management Interface between PXC and DWDM