All-optical decrementing of a packet’s time-to-live (TTL) field using logic XOR gates | Zendy

Ruth Vilar | Zendy; Jose Manuel Martinez | Zendy; F. Ramos | Zendy; J. Martí | Zendy

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All-optical decrementing of a packet’s time-to-live (TTL) field using logic XOR gates

Author(s) -

Ruth Vilar,

Jose Manuel Martinez,

F. Ramos,

J. Martí

Publication year - 2008

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.16.019734

Subject(s) - extinction ratio , subtractor , optics , xor gate , computer science , logic gate , physics , cascade , astronomical interferometer , network packet , interferometry , optoelectronics , algorithm , wavelength , adder , cmos , engineering , computer network , chemical engineering

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.

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