Optical Networks - _References8_104

Optical Networks - _References8_104 - 508 Control and...

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508 Control and Management OLT Amplifier A BCD E F G Figure 8.14 Example for Problem 8.3. Draw a time line indicating the behavior of each node in the network after the failure, including the transmission of OCh-FDI and OMS-FDI signals. (b) Now assume that each node detects loss of light in 2 ms, immediately sends an FDI signal downstream, and waits an additional 2 s after the loss of light is detected before it triggers an alarm. Assume the same propagation delay values as before. Redraw the time line indicating the behavior of each node in the network after the failure, including the transmission of OCh-FDI and OMS-FDI signals. What do you observe as the difference between the two methods proposed above? 8.4 Consider an OXC connected to multiple OLTs. (a) If the OXC has an electronic switch core with optical-to-electrical conver- sions at its ports, what overhead techniques can it use? How would it commu- nicate with other such OXCs in the network? What performance parameters could it monitor? (b) If the OXC is all optical, with no optical-to-electrical conversions, what overhead techniques can it use? How would it communicate with other such OXCs in the network? What performance parameters could it monitor? 8.5 Consider the open fiber control protocol in the Fibre Channel standard.
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This note was uploaded on 01/15/2011 for the course ECE 6543 taught by Professor Boussert during the Spring '09 term at Georgia Institute of Technology.

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Optical Networks - _References8_104 - 508 Control and...

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