title: All-optical decrementing of a packet's time-to-live (TTL) field using logic XOR gates.
abstract: A novel optical time-to-live (TTL) method based on the use of logic XOR gates is proposed. All-optical decrementing of a packet's TTL field is demonstrated employing a cascade of two SOA-based Mach-Zehnder interferometers. The principle of operation is validated by means of simulations, showing a good extinction ratio (higher than 10 dB) at the output of the 1-bit subtractor.
authors.affiliation: Valencia Nanophotonics Technology Center, Universidad Politécnica de Valencia, Camino de Vera s/n, 46022 Valencia, Spain. rutvima@ntc.upv.es
authors.forename: Ruth
authors.initials: R
authors.lastname: Vilar
authors.forename: José M
authors.initials: JM
authors.lastname: Martínez
authors.forename: Francisco
authors.initials: F
authors.lastname: Ramos
authors.forename: Javier
authors.initials: J
authors.lastname: Martí