Acta Photonica Sinica, Volume. 34, Issue 12, 1795(2005)
Influence of Ridge Width on Its Frequency Bandwidth of Traveling-wave Electroabsorption Modulators
According to the microwave properties of the traveling-wave electroabsorption modulator (TW-EAM) transmission line, an equivalent circuit model was presented and a GaAs/GaAlAs TW-EAM for 850 nm has been fabricated. The influence of the ridge width on the frequency bandwidth was driven by analyzing the characteristic impedance Z_0, microwave transmission constant γ and S_ 21. A reduced velocity mismatch between optical wave and microwave and an impedance mismatch were demonstrated for the narrower ridge width. Potential frequency bandwidth of 23.9 GHz of a TW-EAM was predicted by theoretical simulation when the ridge width was 2 μm.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Influence of Ridge Width on Its Frequency Bandwidth of Traveling-wave Electroabsorption Modulators[J]. Acta Photonica Sinica, 2005, 34(12): 1795