Frozen mode in coupled silicon ridge waveguides for optical true time delay applications

B Paul, NK Nahar, K Sertel - JOSA B, 2021 - opg.optica.org
We propose a simple photonic waveguide structure that exhibits light propagation modes
with vanishing group velocity via mode degeneracy. This enables stationary inflection point …

Harnessing the frozen-mode in coupled silicon ridge waveguides for true time delay applications

B Paul, NK Nahar, K Sertel - 2019 International Conference on …, 2019 - ieeexplore.ieee.org
Summary form only given. Periodic material arrangements and sophisticated metamaterial
structures have enabled novel ways of manipulating light by engineering their dispersion to …

Frozen-light modes in 3-way coupled silicon ridge waveguides

R Almhmadi, K Sertel - 2019 United States National Committee …, 2019 - ieeexplore.ieee.org
Frozen-light modes supported by the stationary inflection point (SIP) within the pass band of
3-way coupled periodic silicon ridge waveguides is demonstrated. Precise tuning of the …

Scalable and reconfigurable true time delay line based on an ultra-low-loss silica waveguide

QQ Song, ZF Hu, KX Chen - Applied Optics, 2018 - opg.optica.org
A scalable and reconfigurable on-chip optical true time delay line consisting of Mach–
Zehnder interferometer (MZI) switches and delay waveguides is proposed and …

[HTML][HTML] On-chip optical true time delay lines featuring one-dimensional fishbone photonic crystal waveguide

CJ Chung, X Xu, G Wang, Z Pan, RT Chen - Applied Physics Letters, 2018 - pubs.aip.org
In this paper, we present on-chip optical true time delay lines based on slow light one-
dimensional (1D) fishbone photonic crystal waveguides (FPCWs). The structural slow light is …

3-bit substrate-guided-mode optical true-time-delay lines operating at 25 GHz

RLQ Li, RT Chen - IEEE Photonics Technology Letters, 1997 - ieeexplore.ieee.org
We report a high packing density true-time-delay lines based on substrate guided wave
propagation combined with slanted volume phase grating fanout couplers. Three-bit delay …

High-density integrated delay line using extreme skin-depth subwavelength grating waveguides

I Ahmed, SZ Ahmed, N Jaidye, M Borhan Mia… - Optics Letters, 2023 - opg.optica.org
Optical delay lines control the flow of light in time, introducing phase and group delays for
engineering interferences and ultrashort pulses. Photonic integration of such optical delay …

Photonic beamforming for 5G and beyond: A review of true time delay devices enabling ultra-wideband beamforming for mmWave communications

B Paul, K Sertel, NK Nahar - IEEE Access, 2022 - ieeexplore.ieee.org
The next generations of wireless communications are promising high capacity, low latency,
and high throughput, enabled by millimeter wave spectrum. Beamforming and beam …

Slow-light, band-edge waveguides for tunable time delays

M Povinelli, S Johnson, J Joannopoulos - Optics Express, 2005 - opg.optica.org
We propose the use of slow-light, band-edge waveguides for compact, integrated, tunable
optical time delays. We show that slow group velocities at the photonic band edge give rise …

Ultralow-loss compact silicon photonic waveguide spirals and delay lines

S Hong, L Zhang, Y Wang, M Zhang, Y Xie… - Photonics Research, 2022 - opg.optica.org
Low-loss and compact optical waveguides are key for realizing various photonic integrated
circuits with long on-chip delay lines, such as tunable optical delay lines, optical coherence …