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Analysis of semiconductor intersectional waveguide optical switch-modulator

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3 Author(s)
Shimomura, K. ; Dept. of Phys. Electron., Tokyo Inst. of Technol., Japan ; Suematsu, Y. ; Arai, S.

Transmission and reflection characteristics and wavelength chirping of a guided mode in a semiconductor intersectional optical switch-modulator are analyzed by considering the electric field-induced refractive index variation along with the absorption loss variation. The refractive index and absorption ratio, α¯p, is shown to determine the performance of the switch-modulator. A transmission port is suitable for a modulation with a high extinction ratio, low insertion loss, and small wavelength chirping. The insertion loss at the reflection port depends heavily on α¯p. A low insertion loss and high extinction ratio intersectional optical switch is possible when -α¯p is higher than 10, which can be realized with a quantum box structure

Published in:

Quantum Electronics, IEEE Journal of  (Volume:26 ,  Issue: 5 )