Single-sized phase-change metasurfaces for dynamic information multiplexing and encryption DOI Creative Commons
Tingting Liu, Jie Li, Shuyuan Xiao

et al.

Physical Review Research, Journal Year: 2024, Volume and Issue: 6(2)

Published: June 7, 2024

Optical metasurfaces empower us to manipulate the electromagnetic space and control light propagation at nanoscale, offering a powerful tool achieve modulation of for information processing storage. In this paper, we propose phase-change metasurface realize dynamic multiplexing encryption near-field information. Based on orientation degeneracy polarization governed by Malus's law, elaborately design distribution Sb2S3 meta-atoms with same dimension simultaneously satisfy amplitude requirements three independent channels. Using corresponding as decoding keys, different nanoprinting images can be displayed, these multiplexed switched off leveraging reversible tunability Sb2S3 between amorphous crystalline states. With unparalleled advantages ultracompactness, simple strategy, high density security, proposed afford promising prospects high-end applications in ultracompact intelligent display, high-dense optical data storage, encryption. Published American Physical Society 2024

Language: Английский

Nonvolatile programmable silicon photonics using an ultralow-loss Sb 2 Se 3 phase change material DOI Creative Commons
Matthew Delaney, Ioannis Zeimpekis, Han Du

et al.

Science Advances, Journal Year: 2021, Volume and Issue: 7(25)

Published: June 16, 2021

An ultralow-loss optical phase change material enables reversible programming of the flow light in silicon photonics.

Language: Английский

Citations

191
Ultra-low-energy programmable non-volatile silicon photonics based on phase-change materials with graphene heaters DOI
Zhuoran Fang, Rui Chen, Jiajiu Zheng

et al.

Nature Nanotechnology, Journal Year: 2022, Volume and Issue: 17(8), P. 842 - 848

Published: July 4, 2022

Language: Английский

Citations

164
Ultra-compact nonvolatile phase shifter based on electrically reprogrammable transparent phase change materials DOI Creative Commons
Carlos Rı́os,

Qingyang Du,

Yifei Zhang

et al.

PhotoniX, Journal Year: 2022, Volume and Issue: 3(1)

Published: Oct. 26, 2022

Abstract Optical phase shifters constitute the fundamental building blocks that enable programmable photonic integrated circuits (PICs)—the cornerstone of on-chip classical and quantum optical technologies [1, 2]. Thus far, carrier modulation thermo-optical effect are chosen phenomena for ultrafast low-loss shifters, respectively; however, state information they carry lost once power is turned off—they volatile. The volatility not only compromises energy efficiency due to their demand constant supply, but also precludes them from emerging applications such as in-memory computing. To circumvent this limitation, we introduce a shifting mechanism exploits nonvolatile refractive index upon structural transition Sb 2 Se 3 , bi-state transparent change material (PCM). A zero-static electrically-driven shifter realized on CMOS-backend silicon-on-insulator platform, featuring record up 0.09 π/µm low insertion loss 0.3 dB/π, which can be further improved streamlined design. Furthermore, demonstrate extinction ratio trimming ring resonators pioneer one-step partial amorphization scheme enhance speed PCM devices. diverse cohort devices demonstrated based ultra-compact shifter.

Language: Английский

Citations

154
Integrated optical memristors DOI
Nathan Youngblood, Carlos Rı́os, Wolfram H. P. Pernice

et al.

Nature Photonics, Journal Year: 2023, Volume and Issue: 17(7), P. 561 - 572

Published: May 29, 2023

Language: Английский

Citations

86
A ferroelectric multilevel non-volatile photonic phase shifter DOI
Jacqueline Geler-Kremer, Felix Eltes, Pascal Stark

et al.

Nature Photonics, Journal Year: 2022, Volume and Issue: 16(7), P. 491 - 497

Published: May 30, 2022

Language: Английский

Citations

76
In-memory photonic dot-product engine with electrically programmable weight banks DOI Creative Commons
Wen Zhou, Bowei Dong, Nikolaos Farmakidis

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: May 20, 2023

Abstract Electronically reprogrammable photonic circuits based on phase-change chalcogenides present an avenue to resolve the von-Neumann bottleneck; however, implementation of such hybrid photonic–electronic processing has not achieved computational success. Here, we achieve this milestone by demonstrating in-memory dot-product engine, one that decouples electronic programming materials (PCMs) and computation. Specifically, develop non-volatile electronically PCM memory cells with a record-high 4-bit weight encoding, lowest energy consumption per unit modulation depth (1.7 nJ/dB) for Erase operation (crystallization), high switching contrast (158.5%) using non-resonant silicon-on-insulator waveguide microheater devices. This enables us perform parallel multiplications image superior contrast-to-noise ratio (≥87.36) leads enhanced computing accuracy (standard deviation σ ≤ 0.007). An system is developed in hardware convolutional recognizing images from MNIST database inferencing accuracies 86% 87%.

Language: Английский

Citations

76
Non-volatile electrically programmable integrated photonics with a 5-bit operation DOI Creative Commons
Rui Chen, Zhuoran Fang, Christopher J. Perez

et al.

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: June 12, 2023

Scalable programmable photonic integrated circuits (PICs) can potentially transform the current state of classical and quantum optical information processing. However, traditional means programming, including thermo-optic, free carrier dispersion, Pockels effect result in either large device footprints or high static energy consumptions, significantly limiting their scalability. While chalcogenide-based non-volatile phase-change materials (PCMs) could mitigate these problems thanks to strong index modulation zero power consumption, they often suffer from absorptive loss, low cyclability, lack multilevel operation. Here, we report a wide-bandgap PCM antimony sulfide (Sb2S3)-clad silicon platform simultaneously achieving 5-bit We switch Sb2S3 via an on-chip PIN diode heater demonstrate components with insertion loss (<1.0 dB), extinction ratio (>10 endurance (>1,600 switching events). Remarkably, find that be programmed into fine intermediate states by applying identical thermally isolated pulses, providing unique approach controllable Through dynamic pulse control, achieve on-demand accurate (32 levels) operations, rendering 0.50 +- 0.16 dB contrast per step. Using this behavior, further trim random phase error balanced Mach-Zehnder interferometer. Our work opens attractive pathway toward large-scale PICs low-loss multi-bit operations.

Language: Английский

Citations

69
A Review of Silicon‐Based Integrated Optical Switches DOI Creative Commons
Xiaojun Chen, Jiao Lin, Ke Wang

et al.

Laser & Photonics Review, Journal Year: 2023, Volume and Issue: 17(4)

Published: Feb. 1, 2023

Abstract Recently, silicon‐integrated optical circuits have attracted intensive interests, thanks to the compatibility with complementary metal‐oxide‐semiconductor (CMOS) technology that enables mass production at low cost. The switch is an essential part of integrated circuits, broad applications in communications and networks, computing, sensing such as LiDAR. In general, adopts thermo‐optic or carrier dispersion effect realize reconfigurable signal routing. However, use leads high power consumption, has disadvantage small refractive index change. addition, both effects are non‐latching, hence, continuous consumption required even when switching not needed. For overcoming these drawbacks, phase‐change materials (PCMs) been introduced into switches. this paper, switches classified according underlying structure recent research reviewed. Recent studies on incorporating PCMs also Furthermore, pros cons different types without compared discussed.

Language: Английский

Citations

61
Wavelength-shift-free racetrack resonator hybrided with phase change material for photonic in-memory computing DOI Creative Commons

honghui zhu,

Yegang Lü,

linying cai

et al.

Optics Express, Journal Year: 2023, Volume and Issue: 31(12), P. 18840 - 18840

Published: May 2, 2023

The photonic in-memory computing architecture based on phase change materials (PCMs) is increasingly attracting widespread attention due to its high computational efficiency and low power consumption. However, PCM-based microring resonator devices face challenges in terms of resonant wavelength shift (RWS) for large-scale network. Here, we propose a PCM-slot-based 1 × 2 racetrack with free computing. low-loss PCMs such as Sb2Se3 Sb2S3 are utilized fill the waveguide slot insertion (IL) extinction ratio (ER). Sb2Se3-slot-based has an IL 1.3 (0.1) dB ER 35.5 (8.6) at drop (through) port. corresponding 0.84 (0.27) 18.6 (10.11) obtained Sb2S3-slot-based device. optical transmittance two more than 80%. No resonance can be achieved upon among multi-level states. Moreover, device exhibits degree fabrication tolerance. proposed demonstrates ultra-low RWS, transmittance-tuning range, IL, which provides new scheme realizing energy-efficient

Language: Английский

Citations

51
Roadmap for phase change materials in photonics and beyond DOI Creative Commons

Patinharekandy Prabhathan,

Kandammathe Valiyaveedu Sreekanth, Jinghua Teng

et al.

iScience, Journal Year: 2023, Volume and Issue: 26(10), P. 107946 - 107946

Published: Sept. 22, 2023

Phase Change Materials (PCMs) have demonstrated tremendous potential as a platform for achieving diverse functionalities in active and reconfigurable micro-nanophotonic devices across the electromagnetic spectrum, ranging from terahertz to visible frequencies. This comprehensive roadmap reviews material device aspects of PCMs, their applications spectrum. It discusses various configurations optimization techniques, including deep learning-based metasurface design. The integration PCMs with Photonic Integrated Circuits advanced electric-driven are explored. hold great promise multifunctional development, non-volatile memory, optical data storage, photonics, energy harvesting, biomedical technology, neuromorphic computing, thermal management, flexible electronics.

Language: Английский

Citations

46