Taper multimode interference coupler based on terahertz

Hongxiang ZHANG and Jingya XIE^*

Author Affiliations

School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

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DOI: 10.3969/j.issn.1005-5630.2021.06.003 Cite this Article

Hongxiang ZHANG, Jingya XIE. Taper multimode interference coupler based on terahertz[J]. Optical Instruments, 2021, 43(6): 13 Copy Citation Text

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Fig. 1. xy and yz dimensional diagram of a multimode waveguide

$Relationship between effective refractive index and waveguide width$

Fig. 2. Relationship between effective refractive index and waveguide width

Fig. 3. 1×2 MMI coupler

Fig. 4. Optical power distribution of MMI

Fig. 5. Coupling efficiency of multimode waveguide with different lengths

Fig. 6. Coupling efficiency of 1×2 MMI with different widths

Fig. 7. Schematic diagram of 1×2 taper MMI

Fig. 8. Comparison of coupling efficiency with and without taper

Fig. 9. Taper MMI area

Fig. 10. The coupling effective of taper MMI area

Hongxiang ZHANG, Jingya XIE. Taper multimode interference coupler based on terahertz[J]. Optical Instruments, 2021, 43(6): 13

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