scholarly journals On-chip nanophotonics and future challenges

Nanophotonics ◽  
2020 ◽  
Vol 9 (12) ◽  
pp. 3733-3753 ◽  
Author(s):  
Alina Karabchevsky ◽  
Aviad Katiyi ◽  
Angeleene S. Ang ◽  
Adir Hazan
Keyword(s):  
Optical Waveguides ◽  
High Performance ◽  
Logic Gates ◽  
Building Blocks ◽  
Optical Systems ◽  
Optical Processing ◽  
Nanophotonic Devices ◽  
All Optical ◽  
Future Challenges ◽  
On Chip

AbstractOn-chip nanophotonic devices are a class of devices capable of controlling light on a chip to realize performance advantages over ordinary building blocks of integrated photonics. These ultra-fast and low-power nanoscale optoelectronic devices are aimed at high-performance computing, chemical, and biological sensing technologies, energy-efficient lighting, environmental monitoring and more. They are increasingly becoming an attractive building block in a variety of systems, which is attributed to their unique features of large evanescent field, compactness, and most importantly their ability to be configured according to the required application. This review summarizes recent advances of integrated nanophotonic devices and their demonstrated applications, including but not limited to, mid-infrared and overtone spectroscopy, all-optical processing on a chip, logic gates on a chip, and cryptography on a chip. The reviewed devices open up a new chapter in on-chip nanophotonics and enable the application of optical waveguides in a variety of optical systems, thus are aimed at accelerating the transition of nanophotonics from academia to the industry.

An all optical photonic crystal half adder suitable for optical processing applications

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hamed Azhdari ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Optical Waveguides ◽  
High Speed ◽  
Building Blocks ◽  
Optical Signal ◽  
Ring Resonators ◽  
Optical Processing ◽  
Nonlinear Photonic Crystal ◽  
Half Adder ◽  
All Optical

Abstract Increasing the speed of operation in all optical signal processing is very important. For reaching this goal one needs high speed optical devices. Optical half adders are one of the important building blocks required in optical processing. In this paper an optical half adder was proposed by combining nonlinear photonic crystal ring resonators with optical waveguides. Finite difference time domain method wase used for simulating the final structure. The simulation results confirmed that the rise time for the proposed structure is about 1 ps.

All optical NAND/NOR and majority gates using nonlinear photonic crystal ring resonator

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hassan Mamnoon-Sofiani ◽  
Sahel Javahernia
Keyword(s):  
Photonic Crystal ◽  
Ring Resonator ◽  
Logic Gates ◽  
Building Blocks ◽  
Optical Data ◽  
Optical Logic ◽  
Optical Logic Gates ◽  
Nonlinear Photonic Crystal ◽  
All Optical ◽  
Photonic Crystal Ring Resonator

Abstract All optical logic gates are building blocks for all optical data processors. One way of designing optical logic gates is using threshold switching which can be realized by combining an optical resonator with nonlinear Kerr effect. In this paper we showed that a novel structure consisting of nonlinear photonic crystal ring resonator which can be used for realizing optical NAND/NOR and majority gates. The delay time of the proposed NAND/NOR and majority gates are 2.5 ps and 1.5 ps respectively. Finite difference time domain and plane wave expansion methods were used for simulating the proposed optical logic gates. The total footprint of the proposed structure is about 988 μm2.

scholarly journals Novel Bloch wave excitation platform based on few-layer photonic crystal deposited on D-shaped optical fiber

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Esteban Gonzalez-Valencia ◽  
Ignacio Del Villar ◽  
Pedro Torres
Keyword(s):  
Optical Fibers ◽  
High Performance ◽  
Light Propagation ◽  
Fiber Optic ◽  
Layer Structure ◽  
Optical Network ◽  
Building Blocks ◽  
Bloch Wave ◽  
Nanophotonic Devices ◽  
Wide Range

AbstractWith the goal of ultimate control over the light propagation, photonic crystals currently represent the primary building blocks for novel nanophotonic devices. Bloch surface waves (BSWs) in periodic dielectric multilayer structures with a surface defect is a well-known phenomenon, which implies new opportunities for controlling the light propagation and has many applications in the physical and biological science. However, most of the reported structures based on BSWs require depositing a large number of alternating layers or exploiting a large refractive index (RI) contrast between the materials constituting the multilayer structure, thereby increasing the complexity and costs of manufacturing. The combination of fiber–optic-based platforms with nanotechnology is opening the opportunity for the development of high-performance photonic devices that enhance the light-matter interaction in a strong way compared to other optical platforms. Here, we report a BSW-supporting platform that uses geometrically modified commercial optical fibers such as D-shaped optical fibers, where a few-layer structure is deposited on its flat surface using metal oxides with a moderate difference in RI. In this novel fiber optic platform, BSWs are excited through the evanescent field of the core-guided fundamental mode, which indicates that the structure proposed here can be used as a sensing probe, along with other intrinsic properties of fiber optic sensors, as lightness, multiplexing capacity and easiness of integration in an optical network. As a demonstration, fiber optic BSW excitation is shown to be suitable for measuring RI variations. The designed structure is easy to manufacture and could be adapted to a wide range of applications in the fields of telecommunications, environment, health, and material characterization.

Performance analysis of all optical 2 × 1 multiplexer in 2D photonic crystal structure

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Asghar Askarian
Keyword(s):  
Photonic Crystal ◽  
Optical Waveguides ◽  
Hexagonal Lattice ◽  
Optical Processing ◽  
Switching Speed ◽  
Fast Switching ◽  
Nonlinear Photonic Crystal ◽  
All Optical ◽  
Difference Time ◽  
Optical Structure

Abstract In optical processing systems, multiplexer is used to design optical devices such as arithmetic logic unit (ALU) and shift register (SR). Through this paper, we investigate the application of nonlinear photonic crystal ring resonator (PhCRR) based on nonlinear Kerr effect for realizing an all optical 2 × 1 multiplexer. The structure consists of two PhCRRs and five optical waveguides using hexagonal lattice silicon (Si) rods with a background of air. Performance of all optical 2 × 1 multiplexer is replicated with the help of finite difference time domain (FDTD) procedure at a wavelength of 1571 nm, and simulations presented an ultra-compact optical structure with ultra-fast switching speed.

A high-performance visible-light-driven all-optical switch enabled by ultra-thin gallium sulfide

2021 ◽  
Author(s):  
Kai Xu ◽  
Bao Yue Zhang ◽  
Yihong Hu ◽  
Muhammad Waqas Khan ◽  
Rui Ou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Visible Light ◽  
High Performance ◽  
Optical Switch ◽  
Gallium Sulfide ◽  
All Optical ◽  
Visible Light Driven ◽  
On Chip ◽  
All Optical Switch ◽  
Silicon Based

A 2D Ga2S3 enabled all-optical switch is realized upon a silicon-based on-chip platform. With the unique optical properties of the 2D nanoflakes, the device exhibits excellent switching behaviors driven by visible light at a low power density.

On-chip All-optical Processing Based on Photonic Crystal Nanocavities

2008 ◽  
Author(s):  
M. Notomi ◽  
A. Shinya ◽  
T. Tanabe ◽  
E. Kuramochi ◽  
H. Taniyama ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Optical Processing ◽  
All Optical ◽  
On Chip

scholarly journals Ultracompact all-optical logic gates based on nonlinear plasmonic nanocavities

Nanophotonics ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 365-376 ◽  
Author(s):  
Xiaoyu Yang ◽  
Xiaoyong Hu ◽  
Hong Yang ◽  
Qihuang Gong
Keyword(s):  
Slow Light ◽  
Contrast Ratio ◽  
Logic Gates ◽  
Excitation Power ◽  
Optical Logic ◽  
All Optical ◽  
Nonlinearity Effect ◽  
Order Of Magnitude ◽  
On Chip ◽  
Induced Transparency

AbstractIn this study, nanoscale integrated all-optical XNOR, XOR, and NAND logic gates were realized based on all-optical tunable on-chip plasmon-induced transparency in plasmonic circuits. A large nonlinear enhancement was achieved with an organic composite cover layer based on the resonant excitation-enhancing nonlinearity effect, slow light effect, and field confinement effect provided by the plasmonic nanocavity mode, which ensured a low excitation power of 200 μW that is three orders of magnitude lower than the values in previous reports. A feature size below 600 nm was achieved, which is a one order of magnitude lower compared to previous reports. The contrast ratio between the output logic states “1” and “0” reached 29 dB, which is among the highest values reported to date. Our results not only provide an on-chip platform for the study of nonlinear and quantum optics but also open up the possibility for the realization of nanophotonic processing chips based on nonlinear plasmonics.

scholarly journals AI-assisted on-chip nanophotonic convolver based on silicon metasurface

Nanophotonics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 3315-3322 ◽  
Author(s):  
Kun Liao ◽  
Tianyi Gan ◽  
Xiaoyong Hu ◽  
Qihuang Gong
Keyword(s):  
Optical Computing ◽  
Processing System ◽  
Characteristic Size ◽  
Optical Signal ◽  
Mathematical Operation ◽  
Optical Processing ◽  
Convolution Operation ◽  
All Optical ◽  
On Chip ◽  
Further Development

AbstractConvolution operation is of great significance in on-chip all-optical signal processing, especially in signal analysis and image processing. It is a basic and important mathematical operation in the realization of all-optical computing. Here, we propose and experimentally implement a dispersionless metalens for dual wavelengths, a 4f optical processing system, and then demonstrate the on-chip nanophotonic convolver based on silicon metasurface with the optimization assistance of inverse design. The characteristic size of the dispersionless metalens device is 8 × 9.4 μm, and the focusing efficiency is up to 79% and 85% at wavelengths of 1000 and 1550 nm, respectively. The feature size of the convolver is 24 × 9.4 μm, and the proposed convolver allows spatial convolution operation on any desired function at dual wavelengths simultaneously. This work provides a potential scheme for the further development of on-chip all-optical computing.

scholarly journals Sub-nanosecond light-pulse generation with waveguide-coupled carbon nanotube transducers

2017 ◽  
Vol 8 ◽  
pp. 38-44 ◽  
Author(s):  
Felix Pyatkov ◽  
Svetlana Khasminskaya ◽  
Vadim Kovalyuk ◽  
Frank Hennrich ◽  
Manfred M Kappes ◽  
...  
Keyword(s):  
Light Pulse ◽  
Optical Waveguides ◽  
High Speed ◽  
Pulse Generation ◽  
Light Sources ◽  
Light Emitters ◽  
Nanophotonic Devices ◽  
Decay Times ◽  
On Chip ◽  
Electrical Bias

Carbon nanotubes (CNTs) have recently been integrated into optical waveguides and operated as electrically-driven light emitters under constant electrical bias. Such devices are of interest for the conversion of fast electrical signals into optical ones within a nanophotonic circuit. Here, we demonstrate that waveguide-integrated single-walled CNTs are promising high-speed transducers for light-pulse generation in the gigahertz range. Using a scalable fabrication approach we realize hybrid CNT-based nanophotonic devices, which generate optical pulse trains in the range from 200 kHz to 2 GHz with decay times below 80 ps. Our results illustrate the potential of CNTs for hybrid optoelectronic systems and nanoscale on-chip light sources.

High-performance and ultrafast configurable all-optical photonic crystal logic gates based on interference effects

2021 ◽  
Vol 53 (5) ◽  
Author(s):  
Atefeh Safinezhad ◽  
Hadi Babaei Ghoushji ◽  
Mehrdad Shiri ◽  
Mir Hamid Rezaei
Keyword(s):  
Photonic Crystal ◽  
High Performance ◽  
Logic Gates ◽  
Interference Effects ◽  
All Optical
Sign in / Sign up

Export Citation Format

Share Document