Wavelength Filters

Venghaus, H.

doi:10.1007/978-3-319-42367-8_9

Cited by 16 publications

(9 citation statements)

References 128 publications

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“…19 The silicon nitride platform may need heterogenous integration of the high-speed modulator because of the absence of high-speed electro-optic modulators based on the silicon nitride. 20 And full integration of the optical components can be achieved on the indium phosphide-based platform. We used Ansys Lumerical software for the device simulation.…”

Section: The Beamsteering Device Simulation Modelmentioning

confidence: 99%

Photonic integrated circuit model for phased antenna array beam steering

Stepanov,

Ivanov,

Lopukhova

et al. 2023

Optical Technologies for Telecommunications 2022

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The up-to-the-date electrical systems for beamsteering of the phased antenna arrays are widely used; however, possessing significant drawbacks, including high losses, electromagnetic interference, and high power consumption. To overcome these challenges, microwave photonic systems, both discrete and integrated, have demonstrated outstanding potential. In this context, we discuss the two primary methods for beamsteering, i.e., true time delay (TTD) and phase shift (PS). This paper provides simulation results for a four-channel photonic integrated circuit (PIC) for beamsteering based on the TTD method. The PIC design could be implemented on any fabrication platform. The results demonstrate the approach's feasibility and its potential to improve the performance of phased array antenna systems.

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Section: The Beamsteering Device Simulation Modelmentioning

confidence: 99%

Photonic integrated circuit model for phased antenna array beam steering

Stepanov,

Ivanov,

Lopukhova

et al. 2023

Optical Technologies for Telecommunications 2022

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“…Studies have demonstrated that polarization independence may be achieved by modifying the height-width ratio of the waveguide [33]. In this work, the geometrical parameters are optimized such that n e f f ,TE = n e f f ,TM and to allow a dual spatial modes operation for both TE and TM polarized signals.…”

Section: Athermality and Polarization Sensitivitymentioning

confidence: 99%

Ultra-Low Power All-Optically Tuned Hybrid Graphene Ultra Silicon-Rich Nitride Ring Resonator-Based Add-Drop Filter for DWDM Systems

Rukerandanga¹,

Musyoki

Ataro

2022

Optics

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This research work conducted a design and simulation of an ultra-low power all-optically tuned nonlinear ring resonator-based add-drop filter. The purpose of this study is to investigate a CMOS-compatible nonlinear material system for an optical filter with temperature resilience, polarization insensitivity, and fast and energy-efficient tunability. The all-optical tunability was achieved using an optical pump that photo-excites the high nonlinear Kerr effect in the device material system. A three-dimensional multiphysics approach was used, combining the electromagnetics and thermo-structural effects in the filter. Hybrid graphene on an ultra-rich silicon nitride ring resonator-based filter enabled the realization of an ultra-high tuning efficiency (0.275 nm/mW for TE mode and 0.253 nm/mW for TM mode) on a range of 1.55 nm and thermal stability of 0.11 pm/K. This work contributed to the existing literature by proposing (1) the integration of a high Kerr effect layer on a low loss, high index contrast, and two-photon absorption-free core material with an athermal cladding material system and (2) the use of a cross-section shape insensitive to polarization. Moreover, the tuning mechanism contributed to the realization of an all-optical on-chip integrable filter for Dense Wavelength Division Multiplexing systems in the less occupied L band.

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“…However, traditional optoelectronic information systems still face challenges in processing speed and efficiency . The indiscriminate transmission of sensor data to the terminal causes excessive pressure on the processor, , highlighting the need for novel devices that can acquire, analyze, and respond to external information more efficiently, especially in object detection and tracking scenarios …”

Section: Introductionmentioning

confidence: 99%

Low-Power Perovskite Neuromorphic Synapse with Enhanced Photon Efficiency for Directional Motion Perception

Liu,

Wu,

et al. 2024

ACS Appl. Mater. Interfaces

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The advancement of artificial intelligent vision systems heavily relies on the development of fast and accurate optical imaging detection, identification, and tracking. Framed by restricted response speeds and low computational efficiency, traditional optoelectronic information devices are facing challenges in real-time optical imaging tasks and their ability to efficiently process complex visual data. To address the limitations of current optoelectronic information devices, this study introduces a novel photomemristor utilizing halide perovskite thin films. The fabrication process involves adjusting the iodide proportion to enhance the quality of the halide perovskite films and minimize the dark current. The photomemristor exhibits a high external quantum efficiency of over 85%, which leads to a low energy consumption of 0.6 nJ. The spike timing-dependent plasticity characteristics of the device are leveraged to construct a spiking neural network and achieve a 99.1% accuracy rate of directional perception for moving objects. The notable results offer a promising hardware solution for efficient optoneuromorphic and edge computing applications.

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Wavelength Filters

Cited by 16 publications

References 128 publications

Photonic integrated circuit model for phased antenna array beam steering

Photonic integrated circuit model for phased antenna array beam steering

Ultra-Low Power All-Optically Tuned Hybrid Graphene Ultra Silicon-Rich Nitride Ring Resonator-Based Add-Drop Filter for DWDM Systems

Low-Power Perovskite Neuromorphic Synapse with Enhanced Photon Efficiency for Directional Motion Perception

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