High-Performance Multimode Interference Coupler in Silicon Waveguides With Subwavelength Structures

2011 ◽  
Vol 23 (19) ◽  
pp. 1406-1408 ◽  
Author(s):  
A. Ortega-Monux ◽  
L. Zavargo-Peche ◽  
A. Maese-Novo ◽  
I. Molina-Fernandez ◽  
R. Halir ◽  
...  
2011 ◽  
Vol 36 (2) ◽  
pp. 178 ◽  
Author(s):  
R. Halir ◽  
G. Roelkens ◽  
A. Ortega-Moñux ◽  
J. G. Wangüemert-Pérez

Nanophotonics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 1321-1340
Author(s):  
Lu Sun ◽  
Yong Zhang ◽  
Yu He ◽  
Hongwei Wang ◽  
Yikai Su

AbstractSubwavelength structures such as subwavelength gratings (SWGs) and subwavelength metamaterials are capable of tailoring the optical properties of materials and controlling the flow of light at the nanoscale. The effective indices of the subwavelength structured strip and slab waveguides can be changed in a wide range by choosing an appropriate duty cycle or a filling factor of silicon, which provides an effective method to manipulate the optical field and achieve effective index matching for functional devices. Recent advances in nanofabrication techniques have made it possible to implement subwavelength structures in silicon strip and slab waveguides. Here we review various approaches used to design subwavelength structures and achieve exotic optical responses and discuss how these structures can be used to realize high-performance silicon photonic devices. Both one-dimensional SWG devices and two-dimensional subwavelength metamaterial devices are covered in this review, including subwavelength structure–based polarization handling devices, mode manipulation devices, and building blocks for integrated optical interconnects. Perspectives on subwavelength structured silicon photonic devices are also discussed.


2019 ◽  
Vol 9 (13) ◽  
pp. 2715 ◽  
Author(s):  
Huanlin Lv ◽  
Yuxin Liang ◽  
Zhenlin Wu ◽  
Xiuyou Han ◽  
Geert Morthier ◽  
...  

A microring resonator with the multimode interference coupler is fabricated on the polymer platform by using UV-based soft nanoimprint technique. A unique class of fluorinated polymer, perfluoropolyether (PFPE), is employed for the fabrication of the flexible soft mold. By optimizing the proportion between Ormocore and the thinner maT, the microring resonator is fabricated almost without residual layer. The fabricated device with a Q-factor up to 2.3 × 104 is demonstrated for very-near-infrared wavelengths, which shows high potential for sensing applications.


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