Mr. Cosmin Constantin Popescu Profile

Cosmin Constantin Popescu

at Massachusetts Institute of Technology

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Publications (8)

Proceedings Article | 13 March 2024 Presentation

Advancing metasurfaces towards new frontiers: nonvolatile reconfigurable optics

Hyun Jung Kim, Kiumars Aryana, Scott Bartram, Stephen Borg, William Humphreys, Cosmin-Constantin Popescu, Steven Vitale, Hyung Bin Bae, Taewoo Lee, Tian Gu, Juejun Hu

Proceedings Volume PC12896, PC128960D (2024) https://doi.org/10.1117/12.2692087

KEYWORDS: Free space optics, Transmission electron microscopy, Interfaces, Fabrication, Design and modelling, Circuit switching, Adaptive optics, Thermal modeling, Temperature distribution, Spectroscopes

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Proceedings Article | 9 March 2024 Presentation

Scaling up phase change material-based devices: expanding dimensions for adaptive optics

Kiumars Aryana, Hyun Jung Kim, Cosmin-Constantin Popescu, Steven Vitale, Hyung Bin Bae, Taewoo Lee, Tian Gu, Juejun Hu

Proceedings Volume PC12890, PC128900W (2024) https://doi.org/10.1117/12.2692982

KEYWORDS: Adaptive optics, Circuit switching, Thermal modeling, Switching, Power consumption, Photonic integrated circuits, Optical discs, Optical components, Instrument modeling, Glasses

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Proceedings Article | 15 June 2023 Presentation

Dynamic light shaping using active optical metasurfaces

Fan Yang, Cosmin-Constantin Popescu, Carlos Ríos Ocampo, Yifei Zhang, Mikhail Shalaginov, Hung-I Lin, Sensong An, Hyun Jung Kim, Matthew Julian, Calum Williams, Kiumars Aryana, Scott Bartram, Stephen Borg, William Humphreys, Clara Rivero-Baleine, Paul Miller, Christopher Roberts, Steven Vitale, Hualiang Zhang, Juejun Hu, Tian Gu

Proceedings Volume PC12514, PC125140A (2023) https://doi.org/10.1117/12.2664410

KEYWORDS: Active optics, Optical components, Nanoantennas, Integrated optics

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Proceedings Article | 17 March 2023 Poster

Nonvolatile band switching using transparent phase-change materials on Bragg structures

Nicholas Nobile, Chuanyu Lian, Hongyi Sun, Brian Mills, Cosmin Constantin Popescu, Juejun Hu, Carlos Ríos, Nathan Youngblood

Proceedings Volume PC12424, PC124240U (2023) https://doi.org/10.1117/12.2647868

KEYWORDS: Switching, Waveguides, Phase shift keying, Resonators, Refractive index, Modulation, Bragg gratings, Wavelength division multiplexing, Photons, Optical components

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Proceedings Article | 17 March 2023 Presentation

Phase change reconfigurable optical wavefront synthesis system

Hyun Jung Kim, Kiumars Aryana, Scott Bartram, Stephen Borg, William Humphreys, Cosmin-Constantin Popescu, Tian Gu, Juejun Hu, Steven Vitale

Proceedings Volume PC12432, PC124320N (2023) https://doi.org/10.1117/12.2647764

KEYWORDS: Wavefronts, Silicon, Tunable filters, Switching, Sensors, Remote sensing, Optical fabrication equipment, Optical fabrication, Optical communications, Light scattering

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Proceedings Article | 15 March 2023 Presentation + Paper

Learning from failure: boosting cycling endurance of optical phase change materials

Cosmin-Constantin Popescu, Steven Vitale, Christopher Roberts, Paul Miller, Kiumars Aryana, Myungkoo Kang, Kathleen Richardson, Hyun Jung Kim, William Humphreys, Tian Gu, Juejun Hu

Proceedings Volume 12431, 124310B (2023) https://doi.org/10.1117/12.2657208

KEYWORDS: Photonics, Quantum photonics, Lithium, Switching, Optical switching, Chalcogenides, Silicon, Crystals, Phase shift keying, Transistors

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Proceedings Article | 3 March 2022 Presentation + Paper

Phase change materials: the 'silicon' for analog photonic computing?

Carlos Ríos, Yifei Zhang, Qingyang Du, Cosmin-Constantin Popescu, Mikhail Shalaginov, Paul Miller, Christopher Roberts, Myungkoo Kang, Kathleen Richardson, Tian Gu, Steven Vitale, Juejun Hu

Proceedings Volume 12019, 1201909 (2022) https://doi.org/10.1117/12.2613410

KEYWORDS: Switching, Silicon, Integrated photonics, Optical computing, Lithium, Antimony, Switches, Photonic devices, Chalcogenides, Silicon photonics

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Proceedings Article | 1 August 2021 Presentation + Paper

Electrically-switchable foundry-processed phase change photonic devices

Carlos Ríos, Yifei Zhang, Qingyang Du, Cosmin-Constantin Popescu, Mikhail Shalaginov, Paul Miller, Christopher Roberts, Myungkoo Kang, Kathleen Richardson, Sensong An, Clayton Fowler, Hualiang Zhang, Tian Gu, Steven Vitale, Juejun Hu

Proceedings Volume 11796, 117961Z (2021) https://doi.org/10.1117/12.2592021

KEYWORDS: Switching, Silicon, Antimony, Photonic devices, Waveguides, Phase shifts, Phase shift keying, Integrated photonics, Crystals, Switches

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Showing 5 of 8 publications

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