Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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Field-induced refractive index variations in GaAs/AlGaAs multiple quantum well waveguide modulator

  • Cho, Wook-Rae (Department of Physics, Yonsei University) ;
  • Park, Seung-Han (Department of Physics, Yonsei University) ;
  • Kim, Ung (Department of Physics, Yonsei University) ;
  • Park, Kyung-Hyun (Division of Electronics and Information Technology, Korea Institute of Science and Technology)
  • Received : 1997.01.20
  • Published : 1997.03.01
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Abstract

A quantum well electroabsorption waveguide modulator utilizing a field-induced refractive index change was designed and fabricated. The on/off ratios of the device were investigated as a function of wavelength over the spectral range of 850 nm to 910 nm for the various reverse biases. The field-induced refractive index variations associated with quantum-confined Stark effect was theoretically obtained based on the measured on/off ratios. The resulting maximum refractive index change(${\DELTA}n) of ~7.5 {\times} 10^{-4}$ at -8 V was estimated.

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References

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