Zichun Le, Zili Xu, Chen Sun, Ying Du, Wen Dong. Design and Simulation of Elliptical Crossing Waveguide Based on Multimode Interference[J]. Acta Optica Sinica, 2017, 37(10): 1013001
- Acta Optica Sinica
- Vol. 37, Issue 10, 1013001 (2017)
Fig. 1. Construction of elliptical MMI
Fig. 2. Simulation of traditional elliptical MMI crossing waveguide
Fig. 3. Crossing structure of new elliptical MMI based on SOI
Fig. 4. Simulated optical field distribution of new elliptical MMI crossing waveguide
Fig. 5. (a) First position of self-focusing of elliptical MMI; (b) first position of self-imaging of rectangle MMI; (c) sixth position of self-focusing of elliptical MMI
Fig. 6. Design of elliptical MMI crossing size. (a) W1=0.45 μm; (b) W1=0.5 μm
Fig. 7. Simulated optical field distribution of elliptical MMI crossing waveguide optimized. (a) W1=0.45 μm; (b) W1=0.5 μm
Fig. 8. Electric field model distribution for W1=0.45 μm. (a) Transverse; (b) longitudinal
Fig. 9. Electric field model distribution for W1=0.5 μm. (a) Transverse; (b) longitudinal
Fig. 10. Loss and crosstalk characteristics of elliptical MMI crossing waveguide for W1=0.45 μm. (a) Single loss; (b) single crosstalk
Fig. 11. Loss and crosstalk characteristics of elliptical MMI crossing waveguide for W1=0.5 μm. (a) Single loss; (b) single crosstalk
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Table 1. Propagation constants derived from three approximate methods μm-1
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