2×2 Mach-Zehnder interferometric switch based on hetero-n-i-p-i quantum wells

X. Leijtens, G.W. Yoffe, J.E.M. Haverkort, F. Karouta, J. Brubach, T. Eijkemans, L.M.F. Kaufmann, M.K. Smit, J. A.A. Stegemann, Y.C. Zhu, J.H. Wolter

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A 2×2 Mach-Zehnder interferometric switch has been developed employing 3 dB multimode interference (MMI) couplers and laterally contacted hetero-n-i-p-i quantum wells as the active material providing refractive index changes. Switching over a 4π range between the cross state and the bar state with an on/off ratio of 17:1 has been observed. A record voltage-length product for switching is observed of less than 1 V mm. By exploiting the quadratic nature of the quantum confined Stark effect, a differential switching voltage as low as 0.2 V mm is observed in the push-pull configuration.

Originele taal-2Engels
Pagina's (van-tot)2736-2738
Aantal pagina's3
TijdschriftApplied Physics Letters
Nummer van het tijdschrift20
StatusGepubliceerd - 1 dec 1995


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