Optical and Electrical Memories for Analog Optical Computing

Kari, Sadra Rahimi; Rı́os, Carlos; Jiang, Lei; Meng, Junling; Peserico, Nicola; Sorger, Volker J.; Hu, Juejun; Youngblood, Nathan

doi:10.1109/jstqe.2023.3239918

Cited by 13 publications

(9 citation statements)

References 99 publications

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“…[57]- [60] The optical properities of ITO are comprehensively investigated and can be easily tuned by using different deposition recipes and postthermal annealing menthods [61]- [69]. Another promising material is phase change material, which is non-volatile, has low power consumption, and is highly cyclable [11], [70].…”

Section: Introductionmentioning

confidence: 99%

Broadband and self-driven photodetector based on MoS2/Sb2Te3 heterojunction

Dong

Wang

Gui³

et al. 2023

2D Photonic Materials and Devices VI

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Section: Introductionmentioning

confidence: 99%

Broadband and self-driven photodetector based on MoS2/Sb2Te3 heterojunction

Dong

Wang

Gui³

et al. 2023

2D Photonic Materials and Devices VI

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“…In past few years, active metasurfaces, whose optical responses can be actively tuned, have been investigated such as mechanical deformation 17,18 , electrochemical reactions 19 , electro-optic 20,21 , and thermos-optic effects 22 as well as phasechange material. Especially chalcogenide alloys-based phase change material is a unique approach for realizing nonvolatile active metasurface tuning duce to the refractive index contrast caused by their structural transition 23 . Due the small volume of the metalens compared to traditional converging lens, the active tunning approach could be used in many nanophotonic applications, such as novel combining beam switching 20 and lensing 24 , dual-functional devices 25 , and active holography.…”

Section: Introductionmentioning

confidence: 99%

“…For which the tunable meta lens could be used to replace the bulky lens and DMD in the complicated light path for the development of integrated version. Compare to other proposed on-chip integrated photonic hardware accelerator, in memory computational photonic tensor core 23,27,31,[34][35][36][37][38][39][40][41][42][43][44] , all optical convolution solution provides alternative solution with higher data processing rate and lower power consumption 45,46 . With the combine implementation of high performance electrooptic modulators [47][48][49][50][51][52][53][54][55][56] , photodetectors [57][58][59] , signal converters 60 and the reconfigurable metalens, a fully integrated all optical neuromorphic architecture could be realized soon.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable focusing and defocusing meta lens using Sb2Se3 phase change material

Meng

Peserico²,

Gui³

et al. 2023

High Contrast Metastructures XII

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Phase-change materials offer a compelling platform for low power consumption active integrated optical circuits and meta optics, with their large optical index contrast (Δn, Δk) and nonvolatile phase transition1,2. Here, we demonstrate an electrically driven tunable meta lens in telecom range by exploring the full potential of a low absorption loss and high refractive index contrast PCM alloy, Sb2Se3, to realize non-volatile, reversible, fast focusing and defocusing meta lens in the 1550 telecom spectral range. With a fixed geometric design, the phase change material of Sb2Se3 switches the focusing length of a silicon photonic meta lens between two different values nonviolently. This unique functionality of the hybrid meta surface is attributed to the fact that the silicon’s refractive index is in the middle of the two convertible states in the optical phase change material. The transparency of Sb2Se3 in both states enables near phase-only meta surface structures. Our heterostructure architecture capitalizes over the integration of a robust resistive transparent microheater ITO (Indium Tin Oxide) decoupled from meta lens enabling good model to overlap with PCM meta pillars enables high transmission efficiency. The project be experimentally demonstrating an electrically reconfigurable phase-change meta lens capable of modulation an incident light beam into focusing of defocusing two different statures. This work represents a critical advance towards the development of integrable dynamic meta lens and their potential for beamforming applications.

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“…The use of low-loss phase-change materials (PCMs) such as Sb 2 Se 3 is actively being investigated. [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] The phase transition of PCM provides a nonvolatile change in the refractive index, but the electrical switching through Joule heating typically requires a high voltage when switching the PCM from the crystalline state to the amorphous state, [17] making it incompatible with CMOS drivers. Another approach involves using ferroelectric materials such as barium titanate (BTO), integrated into the waveguide to achieve a nonvolatile phase shift via the Pockels effect.…”

Section: Introductionmentioning

confidence: 99%

Non‐Volatile Hybrid Optical Phase Shifter Driven by a Ferroelectric Transistor

Tang,

Watanabe,

Fujita

et al. 2023

Laser & Photonics Reviews

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Optical phase shifters are essential elements in photonic integrated circuits (PICs) and function as a direct interface to program the PICs. Non‐volatile phase shifters, which can retain information without a power supply, are highly desirable for low‐power static operations. Here a non‐volatile optical phase shifter is demonstrated by driving a III‐V/Si hybrid metal‐oxide‐semiconductor (MOS) phase shifter with a ferroelectric field‐effect transistor (FeFET) operating in the source follower mode. Owing to the various polarization states in the FeFET, multistate non‐volatile phase shifts up to 1.25π are obtained with CMOS‐compatible operation voltages and low switching energy up to 3.3 nJ. Furthermore, a crossbar array architecture is proposed to simplify the control of non‐volatile phase shifters in large‐scale PICs and verify its feasibility by confirming the selective write‐in operation of a targeted FeFET with a negligible disturbance to the others. This work paves the way for realizing large‐scale non‐volatile programmable PICs for emerging computing applications such as deep learning and quantum computing.

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Optical and Electrical Memories for Analog Optical Computing

Cited by 13 publications

References 99 publications

Broadband and self-driven photodetector based on MoS2/Sb2Te3 heterojunction

Broadband and self-driven photodetector based on MoS2/Sb2Te3 heterojunction

Reconfigurable focusing and defocusing meta lens using Sb2Se3 phase change material

Non‐Volatile Hybrid Optical Phase Shifter Driven by a Ferroelectric Transistor

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