scholarly journals Two-dimensional grating coupler on silicon with a high coupling efficiency and a low polarization-dependent loss

2020 ◽  
Vol 28 (3) ◽  
pp. 4001 ◽  
Author(s):  
B. Chen ◽  
X. Zhang ◽  
J. Hu ◽  
Y. Zhu ◽  
X. Cai ◽  
...  
Keyword(s):  
Coupling Efficiency ◽  
Grating Coupler ◽  
Two Dimensional ◽  
Polarization Dependent Loss

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.

scholarly journals Two-dimensional silicon photonic grating coupler with low polarization-dependent loss and high tolerance

2019 ◽  
Vol 27 (16) ◽  
pp. 22268 ◽  
Author(s):  
Yanyun Xue ◽  
Hao Chen ◽  
Yujin Bao ◽  
Jianji Dong ◽  
Xinliang Zhang
Keyword(s):  
Grating Coupler ◽  
Two Dimensional ◽  
High Tolerance ◽  
Polarization Dependent Loss ◽  
Silicon Photonic

A Two-Dimensional Fiber Grating Coupler on SOI for Mode Division Multiplexing

2016 ◽  
Vol 28 (11) ◽  
pp. 1241-1244 ◽  
Author(s):  
Benjamin Wohlfeil ◽  
Georg Rademacher ◽  
Christos Stamatiadis ◽  
Karsten Voigt ◽  
Lars Zimmermann ◽  
...  
Keyword(s):  
Fiber Grating ◽  
Grating Coupler ◽  
Two Dimensional ◽  
Mode Division Multiplexing
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