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Polarization independent δ-strained InGaAs/InGaAsP quantum well waveguide modulator

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9 Author(s)
Y. Zhu ; Dept. of Electr. & Comput. Eng., Maryland Univ., College Park, MD, USA ; S. Saini ; R. Bartolo ; T. Ren
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Polarization independent modulators are important devices for optical communication systems operating at 1.55 μm. However, conventional unstrained QW modulators, based on the quantum confined Stark effect (QCSE), typically exhibit a strong polarization dependence in transmission due to a strong polarization dependence of the absorption near the band edge. We have demonstrated a δ-strained InGaAs/InGaAsP MQW polarization independent waveguide modulator. It exhibits excellent polarization insensitivity, high extinction ratio, high speed response and low driving voltage. It shows that the δ-strained MQW modulator is a promising device for telecommunication applications

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LEOS '99. IEEE Lasers and Electro-Optics Society 1999 12th Annual Meeting  (Volume:2 )

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