A chopped quantum-well polarization-independent interferometric switch at 1.53 μm

B.H.P. Dorren, A. Silov, M.R. Leijs, D.M.H. Dukers, J.E.M. Haverkort, D.H.P. Maat, Y.C. Zhu, F.H. Groen, J.H. Wolter

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We have theoretically designed and realized a phase shifter for a low-loss Mach-Zehnder interferometric switch. The phase shifter is based on 0.85% tensile strained InGaAs-InP chopped quantum-well material. We realized a Mach-Zehnder interferometric switch with polarization-independent switching voltages as low as 3.3±0.05 V at 1525 nm for a switch with a 4-mm-long phase shifting section. The wavelength sensitivity of the switch is 0.036 V/nm for TE and 0.053 V/nm for TM polarization. Calculations of the electro-refraction in the -0.85% strained chopped quantum-well (QW) material based on the 4×4 Luttinger-Kohn Hamiltonian show that the electro-refraction due to the quantum-confined Stark effect (QCSE) for TM polarization is equal to the sum of the mutually comparable QCSE electro-refraction and the Pockels effect for TE polarization in waveguides along the [11¯0] axis. Our first-principle model for calculating the electro refraction is an accurate design tool for predicting device performance in complicated layer structures. The shortest possible phase shifter with a
Originele taal-2Engels
Pagina's (van-tot)317-324
TijdschriftIEEE Journal of Quantum Electronics
Nummer van het tijdschrift3
StatusGepubliceerd - 2000

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    Dorren, B. H. P., Silov, A., Leijs, M. R., Dukers, D. M. H., Haverkort, J. E. M., Maat, D. H. P., Zhu, Y. C., Groen, F. H., & Wolter, J. H. (2000). A chopped quantum-well polarization-independent interferometric switch at 1.53 μm. IEEE Journal of Quantum Electronics, 36(3), 317-324. https://doi.org/10.1109/3.825878