A Survey on Optical Phase-Change Memory: The Promise and Challenges

IEEE Access, Journal Year: 2023, Volume and Issue: 11, P. 11781 - 11803

Published: Jan. 1, 2023

Silicon photonics (SiPh) technology has facilitated the deployment of integrated across different application domains, from ultra-fast communication in Datacom applications to energy-efficient optical computation emerging hardware accelerators for machine learning. More recently, integration SiPh and phase change materials created a unique opportunity realize adaptable, reconfigurable, programmable photonic platforms. In particular, nonvolatile programmability made them promising candidate implementing memory cells architectures. Accordingly, systems even in-memory computing paradigms are on rise, especially given their potential improving data access electronic processors. However, there still many challenges design fabrication phase-change circuits, which need be addressed. This article presents comprehensive survey recent advances with contemporary devices while focusing application. we explore material level architecture by presenting an overview material-level characteristics optical, electrical, thermal properties as well into architectures computing. We also present comparison discuss open research that must addressed further advance towards successful systems.

Language: Английский

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Heterogeneous integration of a high-speed lithium niobate modulator on silicon nitride using micro-transfer printing

APL Photonics, Journal Year: 2023, Volume and Issue: 8(8)

Published: Aug. 1, 2023

Integrated photonic systems require fast modulators to keep up with demanding operation speeds and increasing data rates. The silicon nitride integrated platform is of particular interest for applications such as datacom, light detection ranging (LIDAR), quantum photonics, computing owing its low losses CMOS compatibility. Yet, this inherently lacks high-speed modulators. Heterogeneous integration lithium niobate on waveguides can address drawback strong Pockels effect. We demonstrate the first modulator heterogeneously using micro-transfer printing. device 2 mm long a half-wave voltage Vπ 14.8 V. insertion loss extinction ratio are 3.3 39 dB, respectively. Operation beyond 50 GHz has been demonstrated generation open eye diagrams 70 Gb/s. This proof-of-principle demonstration opens possibilities more scalable fabrication these trusted performant devices.

Language: Английский

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Full-spectrum visible electro-optic modulator

Optica, Journal Year: 2023, Volume and Issue: 10(1), P. 125 - 125

Published: Jan. 4, 2023

We report an on-chip high-speed visible-band electro-optic modulator that can operate over the full visible spectrum of 400–700 nm, with a record low V π ⋅ L 0.48, 0.25, and 0.17 V mathvariant="normal">c mathvariant="normal">m at red, green, blue wavelengths 630, 520, 450 respectively, operation bandwidth > 20 mathvariant="normal">G mathvariant="normal">H mathvariant="normal">z .

Language: Английский

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Programmable high-dimensional Hamiltonian in a photonic waveguide array

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 2, 2024

Abstract Waveguide lattices offer a compact and stable platform for range of applications, including quantum walks, condensed matter system simulation, classical information processing. However, to date, waveguide lattice devices have been static designed specific applications. We present programmable array in which the Hamiltonian terms can be individually electro-optically tuned implement various continuous-time evolutions on single device. used with 11 waveguides lithium niobate, controlled via 22 electrodes, perform experiments that realized Su-Schriffer-Heeger model, Aubrey-Andre Anderson localization, is equivalent over 2500 devices. Our architecture’s micron-scale local electric fields overcome cross-talk limitations thermo-optic phase shifters other platforms such as silicon, silicon-nitride, silica. Electro-optic control allows ultra-fast more precise reconfigurability lower power consumption, input states, our enable study multiple dynamics

Language: Английский

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Frequency comb generation via synchronous pumped χ(3) resonator on thin-film lithium niobate

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: May 9, 2024

Abstract Resonator-based optical frequency comb generation is an enabling technology for a myriad of applications ranging from communications to precision spectroscopy. These combs can be generated in nonlinear resonators driven using either continuous-wave (CW) light, which requires alignment the pump with cavity resonance, or pulsed also mandates that pulse repetition rate and free spectral range (FSR) are carefully matched. Advancements nanophotonics have ignited interest chip-scale combs. However, realizing pulse-driven on-chip Kerr remains challenging, as microresonator cavities limited tuning their FSR resonance frequency. Here, we take steps overcome this limitation demonstrate broadband χ (3) resonator synchronously pumped by tunable femtosecond generator amplitude phase modulators. Notably, employing pumping overcomes limitations typically seen crystalline stimulated Raman scattering.

Language: Английский

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