Universiti Putra Malaysia Optical Packet Switching Contention Resolution Based on a Hybrid Wavelength Conversion-fiber Delay Line Scheme

of the thesis presented to the Senate of Universiti Putra Malaysia in partial fulfilment of the requirements for the degree of Master of Science OPTICAL PACKET SWITCHING CONTENTION RESOLUTION BASED ON A HYBRID WAVELENGTH CONVERSION-FIBER DELAY LINE SCHEME By GO YUN II November 2004 Chairman : Sabira Khatun, Ph.D. Faculty : Engineering Due to the convergence of computer communication and telecommunication technology, data traffic exceeds the telephony traffic. Thus, existing connection oriented and circuit switched network will need to be upgraded toward optical packet switched network. Optical packet switching has characteristics like high speed, data rate/data format transparency and configurable. Wavelength Division Multiplexing is the technology of combining a number of wavelengths in a single fiber. It is a tremendous trend to harness larger bandwidth for enormous delivery. WDM optical devices for multiplexing and switching in simple configuration are now available at a reasonable cost. It is a very appealing solution for development of optical packet switching. The issue of contention arises when two or more packets contend for the same output port in a switch with the same wavelength, which results to packet loss. The packet loss probability is addressed as the most inevitable and significant measurable performance parameter with QoS provisioning that is dominated by wavelength contention in optical