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Fig. S1. Numerical analysis of a gap-variable directional coupler. (a)... | Download Scientific Diagram
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Design of Polarization-Independent Coarse Wavelength Splitters Based on Ridge-Waveguide Directional Couplers
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a) Cross section of a directional coupler with shallower gap region... | Download Scientific Diagram
![Figure 3 from A monolithic low-cost 3-dB directional coupler based on silicon image guide (SIG) technology at millimeter-wave band | Semantic Scholar Figure 3 from A monolithic low-cost 3-dB directional coupler based on silicon image guide (SIG) technology at millimeter-wave band | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/f4dafb288722ad89b8c6dc39587bc18694ba9920/2-Figure3-1.png)
Figure 3 from A monolithic low-cost 3-dB directional coupler based on silicon image guide (SIG) technology at millimeter-wave band | Semantic Scholar
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Basic structure of the directional coupler with zero gap and large gap... | Download Scientific Diagram
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Design and analysis of optical coupler with a stable splitting ratio based on cascaded multistage directional couplers
![Fig. S1. Numerical analysis of a gap-variable directional coupler. (a)... | Download Scientific Diagram Fig. S1. Numerical analysis of a gap-variable directional coupler. (a)... | Download Scientific Diagram](https://www.researchgate.net/profile/Xiaoyan_Zhou7/publication/332529382/figure/fig1/AS:750422981611521@1555926189231/Fig-S1-Numerical-analysis-of-a-gap-variable-directional-coupler-a-Propagation_Q320.jpg)
Fig. S1. Numerical analysis of a gap-variable directional coupler. (a)... | Download Scientific Diagram
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