a) Schematic diagram of the GaAs directional couplers. (b) Measured... | Download Scientific Diagram
![Design of the directional coupler. (a) The power-coupling coefficient... | Download Scientific Diagram Design of the directional coupler. (a) The power-coupling coefficient... | Download Scientific Diagram](https://www.researchgate.net/profile/Ehsan_Hosseini3/publication/260636205/figure/fig1/AS:356598422753281@1462031097884/Design-of-the-directional-coupler-a-The-power-coupling-coefficient-as-a-function-of.png)
Design of the directional coupler. (a) The power-coupling coefficient... | Download Scientific Diagram
![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
![Basic structure of the directional coupler with zero gap and large gap... | Download Scientific Diagram Basic structure of the directional coupler with zero gap and large gap... | Download Scientific Diagram](https://www.researchgate.net/publication/320179646/figure/fig1/AS:631642368532512@1527606684404/Basic-structure-of-the-directional-coupler-with-zero-gap-and-large-gap-acting-as.png)
Basic structure of the directional coupler with zero gap and large gap... | Download Scientific Diagram
![Basic structure of the directional coupler with zero gap and large gap... | Download Scientific Diagram Basic structure of the directional coupler with zero gap and large gap... | Download Scientific Diagram](https://www.researchgate.net/publication/320179646/figure/fig1/AS:631642368532512@1527606684404/Basic-structure-of-the-directional-coupler-with-zero-gap-and-large-gap-acting-as_Q320.jpg)
Basic structure of the directional coupler with zero gap and large gap... | Download Scientific Diagram
![a) Plot of waveguide width and gap versus coupling length. (b) Plot of... | Download Scientific Diagram a) Plot of waveguide width and gap versus coupling length. (b) Plot of... | Download Scientific Diagram](https://www.researchgate.net/profile/Conrad_Rizal/publication/320540241/figure/fig9/AS:668261389717531@1536337339800/a-Plot-of-waveguide-width-and-gap-versus-coupling-length-b-Plot-of-calculated-output.png)
a) Plot of waveguide width and gap versus coupling length. (b) Plot of... | Download Scientific Diagram
![a) Simulated directional coupler structure; the absorbing strip has a... | Download Scientific Diagram a) Simulated directional coupler structure; the absorbing strip has a... | Download Scientific Diagram](https://www.researchgate.net/profile/Andrea_Melloni/publication/226535399/figure/fig2/AS:339788101111808@1458023204014/a-Simulated-directional-coupler-structure-the-absorbing-strip-has-a-complex-refractive.png)
a) Simulated directional coupler structure; the absorbing strip has a... | Download Scientific Diagram
![Design and analysis of optical coupler with a stable splitting ratio based on cascaded multistage directional couplers Design and analysis of optical coupler with a stable splitting ratio based on cascaded multistage directional couplers](https://www.spiedigitallibrary.org/ContentImages/Journals/OPEGAR/51/9/094603/WebImages/OE_51_9_094603_f005.png)
Design and analysis of optical coupler with a stable splitting ratio based on cascaded multistage directional couplers
![Design and analysis of optical coupler with a stable splitting ratio based on cascaded multistage directional couplers Design and analysis of optical coupler with a stable splitting ratio based on cascaded multistage directional couplers](https://www.spiedigitallibrary.org/ContentImages/Journals/OPEGAR/51/9/094603/FigureImages/OE_51_9_094603_f007.png)