Flow isolation in optical networks

We address the issue of ensuring the integrity and privacy of communications in optical networks. To this end, we extend the traffic grooming concept to encompass flow isolation considerations through a multi-class traffic model. We develop, solve, and compare ILP formulations that ensure that only traffic components within the same class are groomed onto (share) the same wavelength. Our approach provides flow isolation guarantees with an increase in overall cost as a tradeoff.