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Sub 10 ps Carrier Response Times in Electroabsorption Modulators Using Quantum Well Offsetting

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8 Author(s)
Daunt, C.L.M. ; Tyndall Nat. Inst., Cork, Ireland ; Cleary, C.S. ; Manning, R.J. ; Thomas, K.
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Sub 10 ps photocarrier response time in an electroabsoption modulator using a custom epitaxy structure is demonstrated. This design used quantum well offsetting, carbon doping, and valence band discontinuity minimization, to achieve a 3.5 ps response time, when biased at -4.5 V. The quantum well offsetting also allows bandwidth optimization for a specific extinction ratio.

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Quantum Electronics, IEEE Journal of  (Volume:48 ,  Issue: 11 )