The example embodiment determines a path through the network for optical wavelengths to be supported by the links represented in the database as {TAIL ~ a function} of evaluating optical signal characteristics at each link along a possible path using the advertised optical signal capabilities and provides a selected path meeting {HEAD ~ an acceptable integrity} of the optical wavelengths to a path establishment module to establish the path through the optical network 
The example embodiment determines a path through the network for optical wavelengths to be supported by the links represented in the database as { TAIL ~ a function } of evaluating optical signal characteristics at each link along a possible path using the advertised optical signal capabilities and provides a selected path meeting { HEAD ~ an acceptable integrity } of the optical wavelengths to a path establishment module to establish the path through the optical network
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