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Advanced Optical Technologies for Data Intensive Applications

Advanced Optical Technologies for Data Intensive Applications. Kim Roberts iGrid 2005. How do I optically switch my Lightpaths?. Need to have each wavelength arriving at a node be able to leave via any of four other optical lines, or drop locally. Must be low cost. Local Add Drop.

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Advanced Optical Technologies for Data Intensive Applications

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  1. Advanced Optical Technologies for Data Intensive Applications Kim RobertsiGrid 2005

  2. How do I optically switch my Lightpaths? • Need to have each wavelength arriving at a node be able to leave via any of four other optical lines, or drop locally. • Must be low cost Local Add Drop

  3. Wavelength Selective Switch • One fiber in, five fibers out. • Individually cross-connects 80 wavelengths

  4. TWc SMF-28 TWc E-LEAF SMF-28 E-LEAF SMF-28 E-LEAF Hurdle: Fiber Dispersion Management ROADM Photonic Cross-Connect Photonic Cross-Connect Photonic Cross-Connect Bulk dispersion compensation will not suffice

  5. Electronic Dispersion Precompensation OSNR vs. distance (10E-3 BER; 10 Gb/s) Simple Rx BAD 3 bit MLSE 5 bit MLSE Tx pre-comp (IM-DD) Tx pre-comp (DPSK) GOOD Optical Dispersion Compensation is Obsolete

  6. Transmitter Pre-compensation Rx Tx Optical modulator CD-1 D/A Digital data Recovered data D/A 0 laser

  7. How can I eliminate latency?ARQ buffer latency grows with round trip time.

  8. Uncoded BCH-1 G.975 BCH-3 BCH-20 Wraptor Forward Error Correction • FEC eliminates Bit Errors • Lightpaths with no packet loss

  9. How do I send a large data set to several destinations?

  10. Layer 1 Multicast • One layer 1 switch: • 50 Mb/s 70,000 ways, • 240Gb/s streams 15 ways • Demo US110 (hardware capacity) HDX Up to 1.28 Tb/s single shelf 3.84 Tb/s as a hub HDXc Up to 640 Gb/s OME Up to 160 Gb/s

  11. How can I secure my Lightpath? • Prevent interception of valuable IP or secret information. • Movie production, government, healthcare, finance, corporate • Preclude alteration or insertion of false data • Banking, government

  12. Lightpath Encryption Demo US106 • Full OC-192/STM-64 10G throughput. • One to twelve lightpaths with separate keys. • 12 x GigE used to heavily load the OC-192 as 12xSTS-1-16V • 400 ns added latency for AES-256 encryption • Another 400 ns for decryption • Integrated into the Nortel OME-6500 transport shelf. • Packet by packet encryption • No encryption of idle frames • No overhead added to each packet

  13. Your Challenge • Most protocols are designed for lousy connections • How can you exploit Lightpaths that are: • Wavelength switched to your destination • Independent of optical physics • Free of packet loss • Layer 1 multicast • Securely encrypted • 40 Gb/s

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