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检索条件"任意字段=Conference on Photon Processing in Microelectronics and Photonics V"

共 397 条记录，以下是31-40 订阅

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High Coupling Efficiency vertical Hybrid Integration Device by Selectively Defining Underneath Si Waveguide

High Coupling Efficiency Vertical Hybrid Integration Device ...

引用

IEEE photonics conference (IPC)

作者： Chen, Yang-Jeng Chen, Cong-Long Fang, Yi-Hsin Chen, Bo-Hong Chen, Rih-You Chiu, Yi-Jen Natl Sun Yat Sen Univ Dept Photon Kaohsiung 804 Taiwan

3D hybrid integration of III-v/Si on a SOI template by selective wet processing on the lower Si layer has been demonstrated. The Si width was adjusted to improving the vertical coupling efficiency between different ma... 详细信息

ISBN: (纸本)9781728158914

关键词： Si photonics hybrid integration undercut etching

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STM Light Emission and I(v) study of single gold nanoantenna 8

STM Light Emission and I(V) study of single gold nanoantenna

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8th International School and conference "Saint Petersburg OPEN 2021" on Optoelectronics, photonics, Engineering and Nanostructures, SPbOPEN 2021

作者： Shkoldin, v.A. Levedev, D.v. Mozharov, A.M. Permyakov, D.v. Dvoretckaia, L.N. Bogdanov, A.A. Samusev, A.K. Golubok, A.O. Mukhin, I.S. Alferov University 8/3 Khlopina str. St. Petersburg194021 Russia ITMO University 9 Kronverksky pr. St. Petersburg197101 Russia Saint Petersburg State University 7/9 Universitetskaya nab. St. Petersburg199034 Russia Institute for analytical instrumentation RAS 26 Rizhskii pr. St. Petersburg190103 Russia

Hight-speed optical nanoemitters are of importance for on-chip optical data processing. A tunnel junctions can be a base for such light emitters, however such structures suffer from low quantum efficiency. One of the ways to improve efficiency of tunneling electron energy to photon generation conversion is the increase of the local density of optical states by using of optical nanoantennas. In this work, we study optoelectronic properties of single gold nanodisc with high spatial resolution. We show nonuniform distribution of electromagnetic near-fields of nanodisk, which is consistent with nanoantenna optical modes. And we demonstrate direct correlation between nanoantenna optical states and features on current-voltage characteristics of tunnel junction between metal tip and nanodisk. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Nanoantennas

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Novel Infrared Focal Plane Array Technology

Novel Infrared Focal Plane Array Technology

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Applied Optics and photonics China (AOPC) conference - Infrared Device and Infrared Technology

作者： Liu Xingxin Wang Chenggang North China Res Inst Electroopt Beijing 100015 Peoples R China

ISBN: (纸本)9781510639485

Innovations in optics, focal plane arrays (FPA), microelectronics and image processing have revolutionized infrared camera design. Infrared detectors coupled with nanostructures are expected to subvert the traditional intensity detectors and advance to the multi-dimensional and data cube detectors. photon trapping technology is expected to decrease the intrinsic dark current, broaden the response band, increase the QE and increase the working temperature. High density FPAs result to novel wide field-of-view small SWaP broadband infrared camera architecture. Digital-pixel focal plane for real-time digital image processing enable the intelligent chips. This paper highlights sensors with nanostructure coupled FPA, photo trapping FPAs, high density FPAs and digital-pixel FPAs.

关键词： photonic nanostructure photon trapping high density FPA 3D ROIC digital-pixel focal plane real-time digital image processing

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Brewster effect in the broadband light reflectivity 4

Brewster effect in the broadband light reflectivity

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4th International conference on Metamaterials and Nanophotonics (METANANO)

作者： Nesterenko, D. v. Kolesnikova, M. D. Lyubarskaya, L. v. Soifer, v. A. RAS Branch FSRC Crystallog & Photon Image Proc Syst Inst Samara 443001 Russia Samara Natl Res Univ Samara 443086 Russia

In this work, we analyze the characteristics of the Brewster effect at the air-glass interface for monochromatic and broadband polarized light. The obtained broadband light reflectivity spectrum demonstrates the modif... 详细信息

关键词： Reflection

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A function-based approach to real-time visualization using graphics processing units

A function-based approach to real-time visualization using g...

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conference on photonics Applications in Astronomy, Communications, Industry, and High Energy Physics Experiments

作者： vyatkin, Sergey, I Romanyuk, Olexander N. Pavlov, Sergii, v Romanyuk, Oksana, v Snigur, Anatoly, v Komodo, Pawel Smailova, Saule Yeraliyeva, Bakhyt Inst Automat & Electrometry SB RAS Novosibirsk Russia Vinnytsia Natl Tech Univ Vinnitsa Ukraine Lublin Univ Technol Nadbystrzycka 38d PL-20618 Lublin Poland East Kazakhstan State Tech Univ Ust Kamenogorsk Kazakhstan Taraz State Univ Taraz Kazakhstan

ISBN: (数字)9781510639881

ISBN: (纸本)9781510639881

A function-based approach of object rendering based on perturbation functions and 3D textures with the use of graphics processing units is proposed. To generate the terrain and the control in levels of detail, the similar technique as that for color textures is used. A method of real-time rendering of 3D clouds is described. For this aim, it is proposed to form 3D textures by means of pre-processing of the inner cloud pattern and volume-oriented rendering.

关键词： non-polygonal surfaces free forms perturbation functions 3D texture voxels

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A Neural Recording IC Design with on-chip CMOS Electrode Array for Brain-machine Interface

A Neural Recording IC Design with on-chip CMOS Electrode Arr...

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IEEE Asia-Pacific conference on Circuits and Systems

作者： Ronghao Zhang Xu Liu Zhijie Chen Peiyuan Wan Tao Chen Institute of Advanced Photonics Technology College of Microelectronics Beijing University of Technology Beijing China

This paper presents an integrated circuit design for neural recording chip with integrated CMOS electrode array. The implementation of on-chip electrode array can greatly improve the implantability of neural recording systems. The chip is mainly composed of a neural recording analog front end and an $8\times 8$ microelectrode array designed in CMOS process technology. The analog front end of the neural recording circuit adopts chopper technique, which effectively reduces the low-frequency noise. The whole circuit has been designed in Cadence using the SMIC 180-nm CMOS process. The simulation results show that the signal with a frequency ranging from 0-2kHz and the amplitude ranging from $0-500 \ \mu \mathrm{v}$ can be independently recorded through the electrodes with a control terminal. The electrode array and the recording analog front end IC are partly overlapped using different metal layers, saving the chip area. The chip area of the final circuit with 64 electrodes is only 1400 $\mu \mathrm{m}\times 760 \ \mu \mathrm{m}$ .

关键词： Electrodes Array signal processing Simulation Choppers (circuits) CMOS process Distance measurement Brain-computer interfaces

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Arbitrary-order optical differentiation in refection by sequence of first-order differentiators 4

Arbitrary-order optical differentiation in refection by sequ...

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4th International conference on Metamaterials and Nanophotonics (METANANO)

作者： Golovastikov, Nikita v. Bykov, Dmitry A. Doskolovich, Leonid L. Russian Acad Sci Branch Fed Sci Res Ctr Crystallog & Photon Image Proc Syst Inst Samara Russia Samara Natl Res Univ Samara Russia

We propose a simple analytical method for designing arbitrary-order optical differentiators operating in reflection by successively arranging several first-order optical differentiators. The approach is based on the scattering matrix analysis, does not involve numerical optimization and is valid for differentiators of arbitrary configurations. The numerical simulation results demonstrate high-quality differentiation of a picosecond pulse for up to the fourth order. The proposed method can find application in the design of analogue optical computing and optical information processing systems.

关键词： Optical data processing

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Artifacts suppression in biomedical images using a guided filter 13

Artifacts suppression in biomedical images using a guided fi...

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13th International conference on Machine vision

作者： Bukreeva, I Ingacheva, A. Fratini, M. Cedola, A. Junemann, O. Longo, E. Wilde, F. Moosmann, J. Buzmakov, A. Krivonosov, Y. Zolotov, D. Saveliev, S. Asadchikov, v Chukalina, M. Inst Nanotechnol CNR Rome Unit Piazzale Aldo Moro 5 Rome Italy RAS PN Lebedev Phys Inst Leninskiy Pr 53 Moscow Russia FSRC Crystallog & Photon RAS Leninskiy Pr 59 Moscow Russia Smart Engines Serv LLC 60 Letiya Oktyabrya Pr9 Moscow Russia Fdn Santa Lucia Via Ardeatina 352 Rome Italy FSSI Res Inst Human Morphol Tsyurupy Str 3 Moscow Russia Helmholtz Zentrum Geesthacht Inst Mat Res Max Planck Str 1 D-21502 Geesthacht Germany

ISBN: (纸本)9781510640412

Despite significant progress in computer vision, pattern recognition, and image analysis, artifacts in imaging still hampers the progress in many scientific fields relying on the results of image analysis. We here present an advanced image-based artifacts suppression algorithm for high-resolution tomography. The algorithm is based on guided filtering of a reconstructed image mapped from the Cartesian to the polar coordinates space. This post-processing method efficiently reduces both ring- and radial streak artifacts in a reconstructed image. Radial streak artifacts can appear in tomography with an off-center rotation of a large object over 360 degrees used to increase the reconstruction field of view. We successfully applied the developed algorithm for improving x-ray phase-contrast images of human post-mortem pineal gland and olfactory bulbs.

关键词： guided filter orthotropic artifacts ring artifacts radial streak artifacts polar coordinates pineal gland olfactory bulb

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Investigation of the wavelength dependency of the creation of sub-surface modifications in ZnS

Investigation of the wavelength dependency of the creation o...

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conference on Fiber Lasers and Glass photonics - Materials through Applications II

作者： Richter, Roland A. Tolstik, Nikolai Sorokin, Evgeni Okhrimchuk, A. G. Smayev, M. P. Likhov, v. v. Sorokina, Irina T. Norwegian Univ Sci & Technol Dept Phys NTNU N-7491 Trondheim Norway Atla Lasers AS Richard Birkelands Vei 2b N-7491 Trondheim Norway TU Wien Inst Photon Gusshausstr 27-387 A-1040 Vienna Austria Russian Acad Sci Prokhorov Gen Phys Inst Vavilova Str 38 Moscow Russia Mendeleyev Univ Chem Technol Russia Miusskaya Sq 9 Moscow Russia

ISBN: (数字)9781510634879

ISBN: (纸本)9781510634879

Sub-surface femtosecond laser waveguide writing in ZnS is being investigated using both experimental and numerical simulations. We show that non-linear absorption and self-focusing play a critical role in the creation of the sub-surface modifications. The wavelength- and intensity dependence of the non-linear optical parameters change the strength of the sub-surface modifications when using lasers operating at different wavelengths. We investigate several wavelength ranges of interest, covering the wavelength peaks of the different non-linear processes. Furthermore, we compare the results of the numerical simulations to several different experiments and show a close correlation between the experimentally obtained results and the numerically obtained results. Finally, we also show that in the investigated wavelength range between 800nm and 1000nm there is no significant difference between the commonly used wavelengths for femtosecond laser processing, provided the other processing parameters are the same.

关键词： Pulsed lasers laser material processing pulse propagation and temporal solitons numerical approximation and analysis

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Silicon photonics and hybrid silicon laser technology

Silicon photonics and hybrid silicon laser technology

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2020 International conference on Compound Semiconductor Manufacturing Technology, CS MANTECH 2020

作者： venables, Ranju D. Silicon Photonics Product Division Data Platforms Group Intel Corporation 3600 Juliette Lane Santa ClaraCA95054 United States

ISBN: (纸本)9781893580305

Intel's Silicon photonics (SiPh) platform combines two significant technical achievements of the 20th century - CMOS processing and the semiconductor laser. SiPh provides a disruptive approach to design and build high speed optical transceivers for datacom and other applications with the potential of lower cost and higher scalability than traditional discrete or III-v monolithic approaches. The high refractive index of silicon allows for low loss optical waveguides with small radius of curvature, enabling integration of wavelength multiplexers, multi-mode interference couplers, tap couplers, Bragg gratings and other optical functionalities used in photonic integrated circuits (PICs). The ability to leverage well established equipment and processes used in the microelectronics industry allows for the massproduction of photonic chips with tight process control, high yield, integration, and wafer-level testing which may be difficult to achieve in traditional compound semiconductor (III-v) optoelectronic semiconductor foundries. The main challenge with traditional SiPh is the hurdle to fabricate and integrate an efficient laser due to the indirect bandgap of silicon. Intel's process uses wafer bonding to combine III-v based compound semiconductor materials on SOI wafers. Light from the silicon waveguides can be evanescently coupled to an active III-v material bonded onto the silicon to provide active optical functionalities such as gain, photodetection, and phase/amplitude modulation. The active material is composed of compound semiconductor materials, such as Indium Phosphide (InP) and InP based alloys, which are the traditional materials of choice for high-performance, long wavelength, lasers. This heterogenous integration approach, in a way, allows for the best of both worlds to be combined: Low loss, low cost silicon passive components and high-performance light emission of III-v compound semiconductor materials. Bonding optically active III-v materials does not req

关键词： Indium phosphide

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