Title :
All-optical decrementing of a packet´s time-to-live (TTL) field and subsequent dropping of a zero-TTL packet
Author :
McGeehan, J.E. ; Kumar, Saurabh ; Gurkan, Deniz ; Nezam, S. M R Motaghian ; Willner, Alan Eli ; Parameswaran, K.R. ; Fejer, M.M. ; Bannister, J. ; Touch, Joseph D.
Author_Institution :
Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, USA
Abstract :
We demonstrate an optical time-to-live (TTL) decrementing module for optical packet-switched networks. Our module acts on a standard NRZ-modulated binary TTL field within a 10 Gb/s packet and decrements it by one if the TTL is nonzero. If the TTL of the incoming packet is zero, the module signals an optical switch to drop the packet. Our technique is independent of the TTL length, does not require the use of ultrashort RZ optical pulses, requires no guard time between the end of the TTL field and the packet data, and has only a 2.4 dB power penalty at 10-9 bit-error rate.
Keywords :
optical communication equipment; optical fibre networks; optical harmonic generation; optical wavelength conversion; packet switching; semiconductor optical amplifiers; telecommunication network routing; 10 Gbit/s; NRZ-modulated binary field; SOA; all-optical decrementing module; binary subtraction algorithm; difference-frequency-generation; four-wave mixing; optical packet-switched networks; optical time-to-live; routing loops; waveguide wavelength shifters; zero time-to-live packet dropping; Bit error rate; Communication switching; Laboratories; Optical fiber communication; Optical fiber networks; Optical packet switching; Optical pulses; Optical switches; Packet switching; Routing;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.819131
