On-Chip Reconfigurable and Ultracompact Silicon Waveguide Mode Converters Based on Nonvolatile Optical Phase Change Materials

Fei, Yedeng; Xu, Yin; Huang, Dongmei; Dong, Yue; Zhang, Bo; Ni, Yi; Wai, P. K. A.

doi:10.3390/nano12234225

Cited by 6 publications

(5 citation statements)

References 53 publications

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“…The crystallization and amorphization temperatures of Sb 2 Se 3 are 200ºC and 620ºC, respectively, which are comparable to those of GST (T crys = 140ºC and T amorph = 550ºC) [5]. These characteristics make Sb 2 Se 3 an ideal PCM for programmable photonics in the telecommunication band [1][2][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 83%

On-chip programmable optical routing using nonvolatile Sb2Se3 phase-change metasurfaces

Zarei

2024

Preprint

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Interferometer meshes are underpinning many new technologies for fully programmable optical circuits; however, their large footprint restricts their scalability. Our investigations demonstrated a new approach for on-chip programmable optical routing based on integrated one-dimensional Sb2Se3 phase change metasurfaces on the silicon-on-insulator (SOI) platform. In the presented scheme, silicon functions as the light guide and Sb2Se3 provides the means for reconfigurability. Reconfiguration is achieved by the dynamic control over the refractive index of Sb2Se3 by selectively adjusting the crystalline phase of Sb2Se3. With a device footprint of 28µmx50μm, the proposed router is more compact than Mach-Zehnder interferometer meshes, while providing a foundry compatible, nonvolatile and broadband reconfigurable paradigm for programmable optical flow control.

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Section: Introductionmentioning

confidence: 83%

On-chip programmable optical routing using nonvolatile Sb2Se3 phase-change metasurfaces

Zarei

2024

Preprint

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“…The mode converter designed in Ref. [ 33 ] with phase change material inlaid in multimode waveguide has a large bandwidth and high conversion efficiency. However, the mode converters in these reports only have simulation results and are not actually fabricated.…”

Section: Discussionmentioning

confidence: 99%

“…To obtain a flexible and reconfigurable device, mode switching is necessary for the MDM system. The mode switch based on phase change materials or van der Waals materials can be used to achieve low power consumption and higher-order reconfigurable mode conversion [ 33 , 34 , 35 ]. In ref.…”

Section: Discussionmentioning

confidence: 99%

On-Chip E00–E20 Mode Converter Based on Multi-Mode Interferometer

et al. 2023

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Mode converters is a key component in mode-division multiplexing (MDM) systems, which plays a key role in signal processing and multi-mode conversion. In this paper, we propose an MMI-based mode converter on 2%-Δ silica PLC platform. The converter transfers E00 mode to E20 mode with high fabrication tolerance and large bandwidth. The experimental results show that the conversion efficiency can exceed −1.741 dB with the wavelength range of 1500 nm to 1600 nm. The measured conversion efficiency of the mode converter can reach −0.614 dB at 1550 nm. Moreover, the degradation of conversion efficiency is less than 0.713 dB under the deviation of multimode waveguide length and phase shifter width at 1550 nm. The proposed broadband mode converter with high fabrication tolerance is promising for on-chip optical network and commercial applications.

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“…The works covered here incorporate structured waveguides (without using large footprint structures such as ringresonators etc) and embedded PCM for enhanced optical performance. Some other recent works (such as figure 5(F)) are referenced [108,111,112]. These novelties, however come at an increased fabrication complexity and small error tolerance window using the current state-of-the-art.…”

Section: Loading On Nanostructured Componentsmentioning

confidence: 99%

Recent developments in Chalcogenide phase change material-based nanophotonics

Tripathi,

Vyas,

Kumar

et al. 2023

Nanotechnology

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There is now a deep interest in actively reconfigurable nanophotonics as they will enable the next generation of optical devices. Of the various alternatives being explored for reconfigurable nanophotonics, Chalcogenide phase change materials (PCMs) are considered highly promising owing to the nonvolatile nature of their phase change. Chalcogenide PCM nanophotonics can be broadly classified into integrated photonics (with guided wave light propagation) and Meta-optics (with free space light propagation). Despite some early comprehensive reviews, the pace of development in the last few years has shown the need for a topical review. Our comprehensive review covers recent progress on nanophotonic architectures, tuning mechanisms, and functionalities in tunable PCM Chalcogenides. In terms of integrated photonics, we identify novel PCM nanoantenna geometries, novel material utilization, the use of nanostructured waveguides, and sophisticated excitation pulsing schemes. On the meta-optics front, the breadth of functionalities has expanded, enabled by exploring design aspects for better performance. The review identifies immediate, and intermediate-term challenges and opportunities in (1) the development of novel chalcogenide PCM, (2) advance in tuning mechanism, and (3) formal inverse design methods, including machine learning augmented inverse design, and provides perspectives on these aspects. The topical review will interest researchers in further advancing this rapidly growing subfield of nanophotonics.

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On-Chip Reconfigurable and Ultracompact Silicon Waveguide Mode Converters Based on Nonvolatile Optical Phase Change Materials

Cited by 6 publications

References 53 publications

On-chip programmable optical routing using nonvolatile Sb2Se3 phase-change metasurfaces

On-chip programmable optical routing using nonvolatile Sb2Se3 phase-change metasurfaces

On-Chip E00–E20 Mode Converter Based on Multi-Mode Interferometer

Recent developments in Chalcogenide phase change material-based nanophotonics

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