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Semiconductor space switches based on multimode interference couplers

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2 Author(s)
Earnshaw, M.P. ; Dept. of Electron., York Univ., UK ; Allsopp, D.W.E.

It is shown theoretically that selective perturbation by electrorefractive effect of the even-order modes in III-V semiconductor multimode interference couplers gives rise to high-performance optical switching. The calculated performance of the proposed switch is 3.4 GHz/Vmm, compared to 0.85 GHz/Vmm for an equivalent Mach-Zehnder interferometer (MZI) switch. The effects of electroabsorption and dimension variations are analyzed to demonstrate the feasibility of the proposed device

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Lightwave Technology, Journal of  (Volume:20 ,  Issue: 4 )