category: Optoelectronics / Photonics

category: IoT, Security & Automotive

Stress tensor mesostructures for deterministic figuring of thin substrates
By Technical Paper Link - 21 Apr, 2022 - Comments: 0

New research paper from MIT and University of Arizona, funded by NASA. Abstract "Accessing the immense value of freeform surfaces for mass-sensitive applications such as space optics or metaform optical components requires fabrication processes that are suited to figuring thin substrates. We present stress tensor mesostructures for precisely correcting figure errors, even after microstruc... » read more

van der Waals Semiconductor Empowered Vertical Color Sensor
By Technical Paper Link - 20 Apr, 2022 - Comments: 0

Abstract "Biomimetic artificial vision is receiving significant attention nowadays, particularly for the development of neuromorphic electronic devices, artificial intelligence, and microrobotics. Nevertheless, color recognition, the most critical vision function, is missed in the current research due to the difficulty of downscaling of the prevailing color sensing devices. Conventional colo... » read more

Neuromorphic photonic circuit modeling in Verilog-A
By Technical Paper Link - 19 Apr, 2022 - Comments: 0

Abstract "One of the significant challenges in neuromorphic photonic architectures is the lack of good tools to simulate large-scale photonic integrated circuits. It is crucial to perform simulations on a single platform to capture the circuit’s behavior in the presence of both optical and electrical components. Here, we adopted a Verilog-A based approach to model neuromorphic photonic cir... » read more

Graphene oxide 2D films integrated with nanowires and ring resonators for enhanced nonlinear optics
By Technical Paper Link - 12 Apr, 2022 - Comments: 0

New research paper from Optical Sciences Centre, Swinburne University of Technology. Abstract "We report enhanced nonlinear optics in nanowires, waveguides, and ring resonators by introducing layered two-dimensional (2D) graphene oxide (GO) films through experimental demonstration. The GO films are integrated on silicon-on-insulator nanowires (SOI), high index doped silica glass, and sili... » read more

Electrically pumped laser transmitter integrated on thin-film lithium niobate
By Technical Paper Link - 11 Apr, 2022 - Comments: 0

New research paper from Harvard, in collaboration with Freedom Photonics and HyperLight Corp, and with funding from DARPA and Air Force Office of Scientific Research. Abstract "Integrated thin-film lithium niobate (TFLN) photonics has emerged as a promising platform for the realization of high-performance chip-scale optical systems. Of particular importance are TFLN electro-optic modulato... » read more

Low-cost and Stable SFX-based Semiconductor Materials in Organic Optoelectronics
By Technical Paper Link - 04 Apr, 2022 - Comments: 0

Abstract: "In the progress of realizing the commercialization of organic optoelectronic materials, the four basic coherent factors are stability, cost, performance, and processability, all which determine the results of device applications. Spiro[fluorene-9,9′-xanthene] (SFX) has been becoming the robust building-block that fulfilling the practical requirements due to its key features of non... » read more

Exploring far-from-equilibrium ultrafast polarization control in ferroelectric oxides with excited-state neural network quantum molecular dynamics
By Technical Paper Link - 01 Apr, 2022 - Comments: 0

New academic paper out of USC Viterbi School of Engineering: Abstract "Ferroelectric materials exhibit a rich range of complex polar topologies, but their study under far-from-equilibrium optical excitation has been largely unexplored because of the difficulty in modeling the multiple spatiotemporal scales involved quantum-mechanically. To study optical excitation at spatiotemporal scales w... » read more

Silicon Thermo-Optic Switches with Graphene Heaters Operating at Mid-Infrared Waveband
By Technical Paper Link - 30 Mar, 2022 - Comments: 0

Abstract "The mid-infrared (MIR, 2–20 μm) waveband is of great interest for integrated photonics in many applications such as on-chip spectroscopic chemical sensing, and optical communication. Thermo-optic switches are essential to large-scale integrated photonic circuits at MIR wavebands. However, current technologies require a thick cladding layer, high driving voltages or may introduce h... » read more

The speed limit of optoelectronics
By Technical Paper Link - 29 Mar, 2022 - Comments: 0

Abstract "Light-field driven charge motion links semiconductor technology to electric fields with attosecond temporal control. Motivated by ultimate-speed electron-based signal processing, strong-field excitation has been identified viable for the ultrafast manipulation of a solid’s electronic properties but found to evoke perplexing post-excitation dynamics. Here, we report on single-photon... » read more

Bell state analyzer for spectrally distinct photons
By Technical Paper Link - 27 Mar, 2022 - Comments: 0

Abstract "We demonstrate a Bell state analyzer that operates directly on frequency mismatch. Based on electro-optic modulators and Fourier-transform pulse shapers, our quantum frequency processor design implements interleaved Hadamard gates in discrete frequency modes. Experimental tests on entangled-photon inputs reveal fidelities of ∼98% for discriminating between the |Ψ+⟩ and |Ψ−⟩... » read more

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