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.

© 2003 IEEE

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Other (9)

V. Paxson, "End-to-end routing behavior in the internet", IEEE/ACM Trans. Networking, vol. 5, pp. 601 -615, Oct. 1997.

W. Hung, K. Chan, L. K. Chen, C. K. Chan and F. Tong, "A routing loop control scheme in optical layer for optical packet networks", in Conf. Opt. Fiber Commun. (OFC) 2002, 2002, ThGG111,. pp. 770- 771.

R. E. Fowkes, "Hardware efficient algorithms for trigonometric functions", IEEE Trans. Computers, vol. 42, pp. 235-239, Feb. 1993 .

H.-I. Jeon and M. A. G. Abushagur, "Digital optical arithmetic processor based on symbolic substitution", in Proc. 20th Southeastern Symp. Syst. Theory (1998), 1998, pp. 221-223.

P. Parolari, L. Marazzi, M. Connen and M. Martinelli, "SOA-based all-optical threshold", in Conf. Lasers and Electro-Optics (CLEO) 2000, 2000, CWK29,. pp. 309-310.

M. C. Cardakli, D. Gurkan, S. A. Havstad and A. E. Willner, "Variable-bit-rate header recognition for reconfigurable networks using tunable fiber-Bragg-gratings as optical correlators", in Conf. Optical Fiber Commun. (OFC) 2002, vol. 1, 2000,TuN2,. pp. 213-215.

K. R. Parameswaran, J. R. Kurz, R. V. Roussev and M. M. Fejer, "Observation of 99% pump depletion in single pass SHG in a PPLN waveguide", in Conf. Lasers and Electro-Optics (CLEO) 2001, 2001, CFB3,. p. 549.

G. S. Kanter, P. Kumar, K. R. Parameswaran and M. M. Fejer, "Wavelength-selective pulsed all-optical switching based on cascaded second-order nonlinearity in a periodically poled lithium-niobate waveguide", IEEE Photon. Technol. Lett., vol. 13, pp. 341-343, Apr. 2001.

M. C. Cardakli and A. E. Willner, "Synchronization of a network element for optical packet switching using optical correlators and wavelength shifting", IEEE Photon. Technol. Lett., vol. 14, pp. 1375 -1377, Sept. 2002.

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