High-efficiency electroabsorption in quaternary AlGaInAsquantum-well optical modulators |
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| Authors: | Wakita K Kotaka I Asai H Nojima S Mikami O |
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| Affiliation: | NTT Opto-Electron. Labs., Kanagawa; |
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| Abstract: | Quaternary AlGaInAs quantum-well optical modulators operating at 1.55 μm are introduced and demonstrated for the first time. An electron-to-heavy-hole exciton absorption peak shift of over 600 Å is observed for a bias voltage of 6 V. An extinction ratio of 19 dB and high-speed operation over 4 GHz is obtained for this optical modulator |
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