Selective light modulation in waveguide grating using phase change materials (Conference Presentation)

2019 ◽  
Author(s):  
Mohsen Jafari ◽  
L. Jay Guo ◽  
Mina Rais-Zadeh
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Light Modulation ◽  
Waveguide Grating

scholarly journals A Review of Germanium-Antimony-Telluride Phase Change Materials for Non-Volatile Memories and Optical Modulators

2019 ◽  
Vol 9 (3) ◽  
pp. 530 ◽  
Author(s):  
Pengfei Guo ◽  
Andrew Sarangan ◽  
Imad Agha
Keyword(s):  
Phase Change ◽  
Phase Change Materials ◽  
Beam Steering ◽  
Light Modulation ◽  
Optical Modulators ◽  
Reversible Phase Transition ◽  
Non Volatile Memory ◽  
Germanium Antimony Telluride ◽  
New Applications ◽  
High Degree

Chalcogenide phase change materials based on germanium-antimony-tellurides (GST-PCMs) have shown outstanding properties in non-volatile memory (NVM) technologies due to their high write and read speeds, reversible phase transition, high degree of scalability, low power consumption, good data retention, and multi-level storage capability. However, GST-based PCMs have shown recent promise in other domains, such as in spatial light modulation, beam steering, and neuromorphic computing. This paper reviews the progress in GST-based PCMs and methods for improving the performance within the context of new applications that have come to light in recent years.

scholarly journals High Q Resonant Sb2S3-Lithium Niobate Metasurface for Active Nanophotonics

Nanomaterials ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 2373
Author(s):  
Qi Meng ◽  
Xingqiao Chen ◽  
Wei Xu ◽  
Zhihong Zhu ◽  
Xiaodong Yuan ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Phase Change ◽  
Optical Switching ◽  
Phase Change Materials ◽  
Beam Steering ◽  
Light Modulation ◽  
Low Loss ◽  
High Q ◽  
Nonlinear Properties ◽  
Nanophotonic Devices

Phase change materials (PCMs) are attracting more and more attentions as enabling materials for tunable nanophotonics. They can be processed into functional photonic devices through customized laser writing, providing great flexibility for fabrication and reconfiguration. Lithium Niobate (LN) has excellent nonlinear and electro-optical properties, but is difficult to process, which limits its application in nanophotonic devices. In this paper, we combine the emerging low-loss phase change material Sb2S3 with LN and propose a new type of high Q resonant metasurface. Simulation results show that the Sb2S3-LN metasurface has extremely narrow linewidth of 0.096 nm and high quality (Q) factor of 15,964. With LN as the waveguide layer, strong nonlinear properties are observed in the hybrid metasurface, which can be employed for optical switches and isolators. By adding a pair of Au electrodes on both sides of the LN, we can realize dynamic electro-optical control of the resonant metasurface. The ultra-low loss of Sb2S3, and its combination with LN, makes it possible to realize a new family of high Q resonant metasurfaces for actively tunable nanophotonic devices with widespread applications including optical switching, light modulation, dynamic beam steering, optical phased array and so on.

Crystallization fractionation technology for paraffin-based phase change materials production

2020 ◽  
pp. 33-38
Author(s):  
S.S. Kruglov (Jr.) ◽  
◽  
G.L. Patashnikov ◽  
S.S. Kruglov (Sr.) ◽  
◽  
...  
Keyword(s):  
Phase Change ◽  
Phase Change Materials

Various Applications of Phase Change Materials: Thermal Energy Storing Materials

2017 ◽  
Vol 6 (4) ◽  
pp. 167-171 ◽  
Author(s):  
M. A. Boda ◽  
◽  
R. V. Phand ◽  
A. C. Kotali ◽  
◽  
...  
Keyword(s):  
Phase Change ◽  
Thermal Energy ◽  
Phase Change Materials
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