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In this paper, we propose and experimentally demonstrate a novel all-optical XOR gate using bistable SRLs. This is the first report to our knowledge that all-optical logic XOR gate is realized using the monolithically integrated bistable semiconductor ring lasers. In this initial experiment, we focus on demonstrating the novel principle of operation and logic XOR function that can be realized with...
RF signals for radio over fibre systems (RoF) can be generated optically by mode-locking (ML) in semiconductor lasers. External optical injection at non-lasing cavity modes of semiconductor ring laser (SRL) generates strong cavity enhanced four-wave mixing(FWM), that result in generation of optical waves modulated by high purity RF frequencies as a result of the mode-locking by way of such FWM. This...
Semiconductor ring laser (SRL) is a promising device for integrated optical injection locking (OIL) configuration, as the SRL operates only in the direction receiving injection, therefore does not feedback into the master laser. We have successfully demonstrated for the first time significant enhancement in the modulation bandwidth of OIL-SRL to >20GHz which limited our measurement bandwidth. The...
Optical injection locking and cavity enhanced four-wave mixing in semiconductor ring lasers have been used to generate data modulated millimeter (mm)-wave optical signals. The scheme is shown to have multigigahertz (multi-GHz) modulation bandwidth. The 4-Gb/s data is transferred directly from an intensity modulated optical signal onto an mm-wave optical signal with the mm-wave frequency tunable in...
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