The example embodiment determines a path through the network for {HEAD ~ optical wavelengths} to be supported by {TAIL ~ the links} represented in the database as a function of evaluating optical signal characteristics at each link along a possible path using the advertised optical signal capabilities 
The example embodiment determines a path through the network for { HEAD ~ optical wavelengths } to be supported by { TAIL ~ the links } represented in the database as a function of evaluating optical signal characteristics at each link along a possible path using the advertised optical signal capabilities
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