Abstract
We present a mathematical model for a wavelength-division
multiplexed self-healing optical fiber bus network to interconnect an array
of sensors. The network uses protection switching to reestablish service after
the failure of one or more of its constituent elements. Our model is a matrix-vector
formalism that divides the network into blocks. It predicts which wavelengths
arrive at the receiver node when damage has occurred in one or more places.
We study single and multiple failures within one block, categorizing and tabulating
all combinations of surviving wavelengths. In this way, we correlate the received
wavelengths with the failure location(s). The network thus provides “self-diagnosis,”
which we define to be the determination of its own sites of failure from network
management information, without requiring external resources.
© 2011 IEEE
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