Autoprotected optical communication ring network

An autoprotected optical communication ring network includes a first and a second optical carrier ( 2, 3 ) having opposite transmission directions and a plurality of optically reconfigurable nodes ( 20 a - 20 f ) optically connected along the first and the second optical carrier ( 2, 3 ) and adapted to communicate in pairs by means of respective links susceptible of failure, the ring network having a normal operative condition in which the nodes of each pair are optically configured so as to exchange optical signals on a respective working arc path at a respective first wavelength ( x ) on the first carrier ( 2 ) and at a respective second wavelength ( y ) different from the first wavelength ( x ) on the second carrier ( 3 ), the respective working path having a complementary arc path defining a respective protection arc path in which the first wavelength ( x ) on the first carrier ( 2 ) and the second wavelength ( y ) on the second carrier ( 3 ) can be used for further links and the first wavelength ( x ) on the second carrier ( 2 ) and the second wavelength ( y ) on the first carrier ( 3 ) are reserved for protection, the ring network having also a failure operative condition in which the nodes terminating a failured link are optically reconfigured so as to exchange optical signals on the respective protection arc path at the respective second wavelength ( y ) on the first carrier ( 2 ) and at the respective first wavelength ( x ) on the second carrier ( 3 ).