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 {HEAD ~ a possible path} using the advertised optical signal capabilities 
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 { HEAD ~ a possible path } using the advertised optical signal capabilities
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH