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All-optical packet switching routing of data packets in the optical domain, exchange, store and forward functions in recent years has been widespread concern. This paper studies the two key components in all-optical packet switching switch, all-optical flip-flop and the optical buffer. A three-shot based on SOA fiber laser, and its structure is simple and compact, reported on multi-shot pulse wavelength limit and high energy threshold. Realized ultrafast along the trigger a switch along the 20 ps reported trigger switch along the fastest, and achieve a 10 Gb / s error-free, all-optical switching pattern distortion. This paper also presents a single SOA-based fiber ring laser flip-flop, to solve the problem with external feedback reported. Finally, we propose a stack-based the monostable trigger and wavelength converter optical buffer can handle two arrive at the same time the cached data package, and storage time based on real-time network data traffic control, multi-level storage depth, storage capacity and easy expansion. First, this paper presents a double / triple-shot based on SOA fiber laser, and experimental verification. The trigger has a simple and compact structure, can be integrated, high extinction ratio, state switching threshold energy is low, the trigger pulse wavelength selectable range advantages. Wherein the extinction ratio between the state of the flip-flop is 45 dB, the state switching threshold energy of 3.6 nJ. Tristable flip-flop an extinction ratio of 40 dB, the threshold energy of 13.6 nJ. Secondly, this paper studies the state of the flip-flop switching speed, all-optical signal processing methods to achieve all-optical flip-flop along with ultra-fast switching, switch along the 20 ps output extinction ratio of 17.5 dB. With ultra-fast along the trigger to drive the all-optical switch, 10 Gb / s, error-free, no pattern distortion optical switching. Thirdly, this article realized SOA flip-flop based on a single fiber ring laser solved the external feedback problems reported in the literature, can exhibit bistability in a very wide wavelength range, and the extinction ratio of 45 dB. A single SOA trigger SOA trigger comparison analysis of the advantages and disadvantages of each. Finally, this paper presents a stack-based the monostable and wavelength converter optical buffer. Be able to handle two simultaneous data packets arrive cache, the storage time can be dynamically controlled according to the data traffic. Easy to expand storage capacity and system complexity increase linearly with the storage capacity.
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