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27 May 2011 Rapidly reconfigurable pulse-shaping using injection-locked VCSELs
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Abstract
We demonstrate independent modulation of four optical comb lines at rates of up to 3.125 GHz by injection-locking a VCSEL to each of the comb lines. The comb-lines are separated by 6.25 GHz, as determined by the channel separation of the fiberized, matched-pair of demultiplexer and multiplexer. The currents to the VCSELs are modulated at frequencies between 0.78125 and 3.125 GHz and the resulting optical waveforms are measured using a fast photodiode and a high-bandwidth, real-time oscilloscope. The electronic waveforms have envelopes with periodicities corresponding to the current-modulation frequencies, and the pulse-shapes within one period of the envelope vary. The measurements prove that dynamic reconfiguration of the optical pulse-shape has been achieved at rates approaching the repetition rate of the comb source.
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Sharad P. Bhooplapur, Nazanin Hoghooghi, and Peter J. Delfyett "Rapidly reconfigurable pulse-shaping using injection-locked VCSELs", Proc. SPIE 8054, Enabling Photonics Technologies for Defense, Security, and Aerospace Applications VII, 805409 (27 May 2011); https://doi.org/10.1117/12.886423
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