A Compact Wideband Flat-band Filter for Silicon Photonic Applications

2009 ◽  
Author(s):  
Qing Li ◽  
Mohammad Soltani ◽  
Siva Yegnanarayanan ◽  
Ali Adibi
Keyword(s):  
Flat Band ◽  
Silicon Photonic ◽  
Band Filter

scholarly journals Modeling the optical properties of twisted bilayer photonic crystals

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Haoning Tang ◽  
Fan Du ◽  
Stephen Carr ◽  
Clayton DeVault ◽  
Olivia Mello ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Band Structure ◽  
Slow Light ◽  
Crystalline Silicon ◽  
Nonlinear Effects ◽  
Flat Band ◽  
Magic Angle ◽  
Light Localization ◽  
Silicon Photonic ◽  
Approach Zero

AbstractWe demonstrate a photonic analog of twisted bilayer graphene that has ultra-flat photonic bands and exhibits extreme slow-light behavior. Our twisted bilayer photonic device, which has an operating wavelength in the C-band of the telecom window, uses two crystalline silicon photonic crystal slabs separated by a methyl methacrylate tunneling layer. We numerically determine the magic angle using a finite-element method and the corresponding photonic band structure, which exhibits a flat band over the entire Brillouin zone. This flat band causes the group velocity to approach zero and introduces light localization, which enhances the electromagnetic field at the expense of bandwidth. Using our original plane-wave continuum model, we find that the photonic system has a larger band asymmetry. The band structure can easily be engineered by adjusting the device geometry, giving significant freedom in the design of devices. Our work provides a fundamental understanding of the photonic properties of twisted bilayer photonic crystals and opens the door to the nanoscale-based enhancement of nonlinear effects.

scholarly journals Improving Low-Dispersion Bandwidth of the Silicon Photonic Crystal Waveguides for Ultrafast Integrated Photonics

Photonics ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 105
Author(s):  
Jinghan Pan ◽  
Meicheng Fu ◽  
Wenjun Yi ◽  
Xiaochun Wang ◽  
Ju Liu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Cmos Technology ◽  
Flat Band ◽  
Integrated Photonics ◽  
Femtosecond Pulses ◽  
Photonic Crystal Waveguide ◽  
Photonic Crystal Waveguides ◽  
Silicon Photonic ◽  
Low Dispersion

We design a novel slow-light silicon photonic crystal waveguide which can operate over an extremely wide flat band for ultrafast integrated nonlinear photonics. By conveniently adjusting the radii and positions of the second air-holes rows, a flat slow-light low-dispersion band of 50 nm is achieved numerically. Such a slow-light photonic crystal waveguide with large flat low-dispersion wideband will pave the way for governing the femtosecond pulses in integrated nonlinear photonic platforms based on CMOS technology.

Expansion of a Frequency Range in the WR-4 Band Filter Bank

2019 ◽  
Vol 139 (11) ◽  
pp. 551-557 ◽  
Author(s):  
Takashi Kawamura ◽  
Masaaki Fuse ◽  
Shigenori Mattori
Keyword(s):  
Filter Bank ◽  
Frequency Range ◽  
Band Filter

Ultra-Small Silicon Photonic Wire Waveguide Devices

2009 ◽  
Vol E92-C (2) ◽  
pp. 217-223 ◽  
Author(s):  
Tao CHU ◽  
Hirohito YAMADA ◽  
Shigeru NAKAMURA ◽  
Masashige ISHIZAKA ◽  
Masatoshi TOKUSHIMA ◽  
...  
Keyword(s):  
Waveguide Devices ◽  
Silicon Photonic ◽  
Photonic Wire

Slow-light Enhanced Nonlinear Optics in Silicon Photonic Crystal Waveguides

PIERS Online ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 273-278 ◽  
Author(s):  
David J. Moss ◽  
B. Corcoran ◽  
C. Monat ◽  
Christian Grillet ◽  
T. P. White ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Nonlinear Optics ◽  
Slow Light ◽  
Photonic Crystal Waveguides ◽  
Silicon Photonic

Analyzing the interface trap density in SiGe capacitors using an abnormal flat band voltage shift at low temperature

2020 ◽  
Vol 13 (11) ◽  
pp. 111006
Author(s):  
Li-Chuan Sun ◽  
Chih-Yang Lin ◽  
Po-Hsun Chen ◽  
Tsung-Ming Tsai ◽  
Kuan-Ju Zhou ◽  
...  
Keyword(s):  
Low Temperature ◽  
Trap Density ◽  
Flat Band ◽  
Interface Trap Density ◽  
Interface Trap ◽  
Flat Band Voltage ◽  
Voltage Shift

Concept, design and verification of components for an integrated on-detector silicon photonic multichannel transmitter

2019 ◽  
Author(s):  
Yunlong Zhang ◽  
Djorn Karnick ◽  
Marc Schneider ◽  
Lars Eisenblätter ◽  
Thomas Kühner ◽  
...  
Keyword(s):  
Concept Design ◽  
Silicon Photonic
Sign in / Sign up

Export Citation Format

Share Document