Wenling Zhu, Heming Chen, Wenkai Xu, Yuchen Hu. Download Type Electro‑Optic Modulator with Reflective Wall Based on Photonic Crystal Nanowire Cavity[J]. Chinese Journal of Lasers, 2023, 50(19): 1901005
- Chinese Journal of Lasers
- Vol. 50, Issue 19, 1901005 (2023)
Fig. 1. Three-dimensional structure of download type electro-optic modulator with reflection wall
Fig. 2. Sectional drawing of electro-optic modulator
Fig. 3. Structural diagram of photonic crystal nanowire cavity
Fig. 4. Circular hole parameter diagram
Fig. 5. Theoretical model of side coupling structure between mainline waveguide and resonant cavity
Fig. 6. Theoretical transmittance spectrum of side coupling structure between mainline waveguide and resonant cavity
Fig. 7. Doping diagram of electro-optic modulator silicon-based materials
Fig. 8. Carrier concentration distributions when modulation voltage is 1.2 V. (a) N type carrier concentration;(b) P type carrier concentration
Fig. 9. Transmissivity and resonance wavelength versus Nreflect
Fig. 10. Transmissivity and resonance wavelength versus
Fig. 11. Transmissivity and Q value versus coupling distance L
Fig. 12. Stable light intensity distribution when incident wavelength is consistent with resonant wavelength
Fig. 13. Transmission spectra of modulator at “on” and “off” states
Fig. 14. Stable time at “on” state of modulator obtained by simulation calculation
Fig. 15. Stable time at “off” state of modulator obtained by simulation calculation
Fig. 16. 3 dB bandwidth of modulator obtained by simulation calculation
Fig. 17. Equivalent circuit of modulator
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Table 1. Performance comparison of nanowire cavity electro-optic modulators
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