Fengchao Liang, Min Li, Dongmin Wu. Optimized Design of Low Driving and High Modulation X-Cut LiNbO3 Electro-Optical Modulator[J]. Acta Optica Sinica, 2018, 38(7): 0713001
- Acta Optica Sinica
- Vol. 38, Issue 7, 0713001 (2018)
Fig. 1. Simulation result of light intensity distribution in directional coupler
Fig. 2. Schematic diagram of the electro-optical modulator
Fig. 3. (a) Diagram of energy transmissivity varies with radius; (b) effect map of non-optimized radius; (c) effect map after radius optimization
Fig. 4. (a) Light intensity distribution of the upper and lower arms of the waveguides varies with the length of directional coupler; (b) minimum coupling length varies with its gap; (c) light splitting effect of directional coupler
Fig. 5. (a) Diagram of cross-section; (b) optical modes; (c) Ex component of electric field;(d) Dx component of electric displacement
Fig. 6. Modulation parameters varies with the voltage
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Table 1. Effect of ridge height on the electro-optic overlap integral factor
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