scholarly journals An analysis of the surface-normal coupling efficiency of a metal grating coupler embedded in a Scotch tape optical waveguide

2017 ◽  
Vol 382 ◽  
pp. 477-484 ◽  
Author(s):  
Carlos Angulo Barrios ◽  
Víctor Canalejas-Tejero
Keyword(s):  
Optical Waveguide ◽  
Coupling Efficiency ◽  
Grating Coupler ◽  
Scotch Tape ◽  
Metal Grating ◽  
Surface Normal ◽  
Normal Coupling

Effect of vertical cavity mode order on surface normal coupling efficiency

2008 ◽  
Vol 40 (14-15) ◽  
pp. 1205-1209
Author(s):  
Sven Mahnkopf ◽  
Duane A. Louderback ◽  
Dhiraj Kumar ◽  
Peter S. Guilfoyle
Keyword(s):  
Cavity Mode ◽  
Coupling Efficiency ◽  
Surface Normal ◽  
Normal Coupling ◽  
Vertical Cavity ◽  
Mode Order

Bottom to in-plane grating coupler with high coupling efficiency and directionality

2019 ◽  
Author(s):  
Yixin Chen ◽  
Bin Ai ◽  
Elham Heidari ◽  
Bonnie J. Dunbar ◽  
Volker J. Sorger ◽  
...  
Keyword(s):  
Coupling Efficiency ◽  
Grating Coupler

scholarly journals Comparison of Fiber-to-Waveguide Couplers in Point Diffraction Interferometer Based on Waveguide Reference Wavefront Source

2020 ◽  
Vol 10 (24) ◽  
pp. 9115
Author(s):  
Yuankai Chen ◽  
Jian Bai ◽  
Chen Wang ◽  
Yingze Xue ◽  
Yongying Yang
Keyword(s):  
Silicon Nitride ◽  
Coupling Efficiency ◽  
Maximum Efficiency ◽  
Grating Coupler ◽  
Polarization Dependent Loss ◽  
Te Mode ◽  
Fabrication Tolerance

To improve the power of reference wavefront generated by reference wavefront source (RWS) based on silicon nitride (SiN) waveguide in point diffraction interferometer (PDI), we design the Y-branch coupler and grating coupler, and then compare the maximum coupling efficiency, 3 dB fabrication tolerance, 3 dB alignment tolerance and polarization dependent loss of two couplers. Our results show that grating coupler has higher coupling efficiency, lower etching difficulty and alignment difficulty, while Y-branch coupler has lower coating difficulty. To get the maximum efficiency, mode in the fiber must be TE mode no matter for grating coupler or Y-branch coupler. This paper improves the power of the wavefront by selecting appropriate fiber-to-waveguide couplers for waveguide RWS. PDI based on the power improved waveguide RWS is expected to be used in many measurement fields.

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