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Wide-wavelength polarization-independent optical modulator based on tensile-strained quantum well with mass-dependent width

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3 Author(s)
Kato, M. ; Dept. of Electron. Eng., Tokyo Univ., Japan ; Tada, Kunio ; Nakano, Y.

We have fabricated a multiple-quantum-well (MQW) waveguide optical modulator incorporating tensile strain and quantum well with mass-dependent width (QWMDW) for the first time. The structure was built on a strain relief InAlGaAs buffer layer grown on a GaAs substrate. Polarization-independent modulation with more than -10 dB extinction (at 8 V reverse voltage) was achieved over a very wide operating range, from 858 to 886 nm wavelength.

Published in:

Photonics Technology Letters, IEEE  (Volume:8 ,  Issue: 6 )