Hybrid wide-band VCOs using low-loss leaky SAW ring filters

1996 ◽  
Author(s):  
S. Doberstein
Keyword(s):  
Wide Band ◽  
Low Loss

DESIGN OF A WIDE BAND EIGHT-WAY COMPACT SIW POWER COMBINER FED BY A LOW LOSS GCPW-TO-SIW TRANSITION

2012 ◽  
Vol 26 ◽  
pp. 97-110 ◽  
Author(s):  
Robab Kazemi ◽  
Ramezanali A. Sadeghzadeh ◽  
Aly E. Fathy
Keyword(s):  
Wide Band ◽  
Power Combiner ◽  
Low Loss

scholarly journals Double Electromagnetically Induced Transparency and Its Slow Light Application Based on a Guided-Mode Resonance Grating Cascade Structure

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3710
Author(s):  
Guofeng Li ◽  
Junbo Yang ◽  
Zhaojian Zhang ◽  
Yuyu Tao ◽  
Lingjun Zhou ◽  
...  
Keyword(s):  
Slow Light ◽  
Electromagnetically Induced Transparency ◽  
Wide Band ◽  
Theoretical Explanation ◽  
Low Loss ◽  
Guided Mode ◽  
Delay Times ◽  
Cascade Structure ◽  
Guided Mode Resonance ◽  
Induced Transparency

In recent years, the achievement of the electromagnetically induced transparency (EIT) effect based on the guided-mode resonance (GMR) effect has attracted extensive attention. However, few works have achieved a double EIT-like effect using this method. In this paper, we numerically achieve a double EIT-like effect in a GMR system with a three-layer silicon nitride waveguide grating structure (WGS), using the multi-level atomic system model for theoretical explanation. In terms of slow light performance, the corresponding two delay times reach 22.59 ps and 8.43 ps, respectively. We also investigate the influence of wavelength detuning of different GMR modes on the transparent window and slow light performance. Furthermore, a wide-band flat-top transparent window was also achieved by appropriately adjusting the wavelength detuning between GMR modes. These results indicate that the EIT-like effect in the WGS has potential application prospects in low-loss slow optical devices, optical sensing, and optical communications.

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