A high-performance visible-light-driven all-optical switch enabled by ultra-thin gallium sulfide

2021 ◽  
Author(s):  
Kai Xu ◽  
Bao Yue Zhang ◽  
Yihong Hu ◽  
Muhammad Waqas Khan ◽  
Rui Ou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
High Performance ◽  
Optical Switch ◽  
Gallium Sulfide ◽  
All Optical ◽  
Visible Light Driven ◽  
On Chip ◽  
All Optical Switch ◽  
Silicon Based

A 2D Ga2S3 enabled all-optical switch is realized upon a silicon-based on-chip platform. With the unique optical properties of the 2D nanoflakes, the device exhibits excellent switching behaviors driven by visible light at a low power density.

Circular Polarization Control in Silicon-Based All-Optical Switch

2005 ◽  
Vol 44 (7A) ◽  
pp. 4749-4751 ◽  
Author(s):  
Naokatsu Yamamoto ◽  
Toshiaki Matsuno ◽  
Hiroshi Takai ◽  
Naoki Ohtani
Keyword(s):  
Circular Polarization ◽  
Optical Switch ◽  
Polarization Control ◽  
All Optical ◽  
All Optical Switch ◽  
Silicon Based

Fast bistable all-optical switch and memory on a silicon photonic crystal on-chip

2005 ◽  
Vol 30 (19) ◽  
pp. 2575 ◽  
Author(s):  
Takasumi Tanabe ◽  
Masaya Notomi ◽  
Satoshi Mitsugi ◽  
Akihiko Shinya ◽  
Eiichi Kuramochi
Keyword(s):  
Photonic Crystal ◽  
Optical Switch ◽  
Silicon Photonic ◽  
All Optical ◽  
On Chip ◽  
All Optical Switch

Preparation of New Azo Benzene Polyurethane and its Thermo-Optical Properties

2014 ◽  
Vol 905 ◽  
pp. 181-184
Author(s):  
Peng Wang ◽  
Fei Yan Ye ◽  
Guo Rong Cao ◽  
Zheng Ling Wang ◽  
Feng Xian Qiu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Optical Switch ◽  
Coupling Reaction ◽  
Attenuated Total Reflection ◽  
Good Thermal Stability ◽  
Vis Spectroscopy ◽  
Diazo Coupling ◽  
All Optical ◽  
Diazo Coupling Reaction ◽  
All Optical Switch

The new azo benzene polyurethane (CAPU) was synthesized by diazo coupling reaction with 1,4-Diaminobenzene, sodium nitrite, and R(-)-3-chloro-1,2-propanediol. The solubility was measured with several organic solvents. Some mechanical properties of CAPU, such as tensile strength and ratio of elongation at break, were investigated. The good thermal stability of the CAPU was shown by its absorption spectrum characterized by UV-Vis spectroscopy and its melting point of 113.5°C. Moreover, the refractive index of CAPU was obtained by the attenuated total reflection (ATR) method at different temperature and wavelength, by which the materials thermo-optic coefficient was calculated. It is shown that the material has a large thermo-optic coefficient and an obvious birefringence phenomena. And the dispersion coefficient was also calculated by the Sellmeyer equation. Because of thermo-optical properties mentioned above, the CAPU could be used to design and generate the thermo-optic switch and even all-optical switch.

An Ultrafast All-Optical Switch with Silicon-Based Silica Structure

2018 ◽  
Vol 55 (4) ◽  
pp. 041303
Author(s):  
吴永宇 Wu Yongyu ◽  
张小平 Zhang Xiaoping ◽  
单欣岩 Shan Xinyan ◽  
郭立鹏 Guo Lipeng
Keyword(s):  
Optical Switch ◽  
All Optical ◽  
All Optical Switch ◽  
Silicon Based

Crystal defect-mediated band-gap engineering: a new strategy for tuning the optical properties of Ag2Se quantum dots toward enhanced hydrogen evolution performance

2015 ◽  
Vol 3 (40) ◽  
pp. 20051-20055 ◽  
Author(s):  
Qi Cao ◽  
Yi-Feng Cheng ◽  
Han Bi ◽  
Xuebing Zhao ◽  
Kaiping Yuan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Visible Light ◽  
Band Gap ◽  
Hydrogen Evolution ◽  
High Performance ◽  
Crystal Defect ◽  
Band Gap Engineering ◽  
New Strategy ◽  
Visible Light Driven

Defect-rich Ag2Se QDs were prepared controllably for sensitizing TiO2 toward high-performance visible-light-driven hydrogen-evolution photocatalysts.

Recovery time for a silicon waveguide all-optical switch

1988 ◽  
Vol 24 (6) ◽  
pp. 303 ◽  
Author(s):  
P.D. Colbourne ◽  
P.E. Jessop
Keyword(s):  
Recovery Time ◽  
Optical Switch ◽  
Silicon Waveguide ◽  
All Optical ◽  
All Optical Switch

scholarly journals Graphene Nanoribbon Gap Waveguides for Dispersionless and Low-Loss Propagation with Deep-Subwavelength Confinement

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1302
Author(s):  
Zhiyong Wu ◽  
Lei Zhang ◽  
Tingyin Ning ◽  
Hong Su ◽  
Irene Ling Li ◽  
...  
Keyword(s):  
High Performance ◽  
Chemical Potential ◽  
Shape Change ◽  
Optical Switch ◽  
Pulse Amplitude ◽  
Propagation Distance ◽  
Graphene Nanoribbon ◽  
Low Loss ◽  
High Loss ◽  
On Chip

Surface plasmon polaritons (SPPs) have been attracting considerable attention owing to their unique capabilities of manipulating light. However, the intractable dispersion and high loss are two major obstacles for attaining high-performance plasmonic devices. Here, a graphene nanoribbon gap waveguide (GNRGW) is proposed for guiding dispersionless gap SPPs (GSPPs) with deep-subwavelength confinement and low loss. An analytical model is developed to analyze the GSPPs, in which a reflection phase shift is employed to successfully deal with the influence caused by the boundaries of the graphene nanoribbon (GNR). It is demonstrated that a pulse with a 4 μm bandwidth and a 10 nm mode width can propagate in the linear passive system without waveform distortion, which is very robust against the shape change of the GNR. The decrease in the pulse amplitude is only 10% for a propagation distance of 1 μm. Furthermore, an array consisting of several GNRGWs is employed as a multichannel optical switch. When the separation is larger than 40 nm, each channel can be controlled independently by tuning the chemical potential of the corresponding GNR. The proposed GNRGW may raise great interest in studying dispersionless and low-loss nanophotonic devices, with potential applications in the distortionless transmission of nanoscale signals, electro-optic nanocircuits, and high-density on-chip communications.

A robust and inexpensive all optical switch with chiral nematic liquid crystal

2021 ◽  
Vol 119 ◽  
pp. 111306
Author(s):  
Hossein mehrzad ◽  
Ezeddin Mohajerani ◽  
Mohammad Mohammadimasoudi ◽  
Kristiaan Neyts
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Optical Switch ◽  
Chiral Nematic ◽  
All Optical ◽  
All Optical Switch
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