Using a near-infrared (NIR) light with 700-1200 nm wavelength, we can visualize the internal structure of an animal body by transillumination imaging. However, the deep structure is severely blurred because of the strong scattering in body tissue. We developed some techniques to [....] » Read More
Nowadays, helically phased light carrying orbital angular momentum (OAM) is well known, as exciting progress on the applications of OAM modes has been made in various fields. OAM modes, as a complete set of orthogonal basis functions for spatial distribution of electromagnetic fi [....] » Read More
Ultrafast laser plasma doping (ULPD) is a new technique developed by us to fabricate planar waveguides on glasses and silica on silicon. In this process femtosecond lasers with pulse duration <100 fs is used to ablate a target material containing ions that introduce refractive [....] » Read More
An underwater optical wireless communication (UOWC) system using 450 nm green light laser source is constructed and studied. The 450 nm blue-light laser is selected as the light source because the characteristics of low absorption in the water. The open sea water is simulated in [....] » Read More
Thanks to the single photon sensitivity and excellent surface-to-surface resolution, single-photon LiDAR has emerged as a prime candidate technology for depth imaging through challenging environments. In this talk, we will first introduce the concept and principle of single photo [....] » Read More
Dr. Dongdong Zhang studied Chemistry at the Jilin University, China and graduated as MS in 2011. He then joined the research group of Prof. Yong Qiu at the Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua Uni [....] » Read More
Starting with an introduction to the Poynting theorem, we derive analytical expressions for the instantaneous Poynting vector for an N-layer lossy optical waveguide structure consisting of multiple metal-dielectric interfaces. These expressions are compared with the equivalent ex [....] » Read More
pH and glucose responsive membranes can be used in controlled drug delivery applications. Controlled drug flow across the membrane is very important for such applications. It is therefore of the foremost importance to obtain membranes with uniform pore morphology. We developed a [....] » Read More
The optical equivalence theorem is analyzed and developped for almost-infinte-valued-operator eigenstates. Pertinent expansions are presented after the calculation of new formalisms for the Optical equivalence theorem. New extensions for the Optical equivalence principle are form [....] » Read More
The fifth-generation of mobile network (5G) and beyond requires optical-wireless convergence to cope with the new value-added applications from challenging scenarios. In this context, we report research activities conducted at the National Institute of Telecommunications (Inatel) [....] » Read More
Solid-surface fluorescence (SSF) is a modern method which combines solid phase extraction with high-sensitive fluorimetric analysis in the solid phase of the sorbent. SSF has been successfully applied for trace quantification of organic and inorganic compounds in various media. T [....] » Read More
Distributed optical fiber sensors (DOFS) represent a very effective technology for the continuous monitoring of structures. Conventionally, DOFS make use of some form of light scattering in silica glass optical fibers. Rayleigh scattering is caused by random fluctuations in the r [....] » Read More
In this work we used Parallal Molecular Dynamics and DL_POLY_4 to comparebetween the total volume of ZnO wurtzite, rocksalt, and zinc blend structures under different pressures and temperatures. Our system is formed from 5832 atoms of ZnO for rocksalt and zinc blend(2916 atoms of [....] » Read More
Until now, it was generally accepted that the gas kinetics is not important in the formation of rotation curves (RC) of spiral galaxies (see Dalcanton and Stilp, doi:10.1088/0004-637X/721/1/547). For this reason, RC is usually calculated within the framework of a naive Newtonian [....] » Read More
Wavelength division multiplexing (WDM) is a great solution for increasing data bitrate communication of multicore polymer optical fiber (MC-POF) system. However, this solution requires adding more optical devices to the system which can limit its performance. To solve this issue, [....] » Read More
It is well known that historically the motion of charged baryonic matter was quantized first (Schrödinger's equation), and only more than 20 years later the Gupta-Bleuler formalism was proposed, which formally described the quantization of the electromagnetic (EM) field. [....] » Read More
To improve the fatigue of newly designed mechanical system subjected to repeated loading, this paper develops parametric accelerated life testing (ALT) as a systematic reliability method to produce the reliability quantitative (RQ) specifications—mission cycle—for rec [....] » Read More
The main point of the wave planetology: “Orbits make structures”. However, any cosmic body moves in several orbits with various frequencies. High-frequency oscillations are modulated by low frequency ones with production of side frequencies. The lower side frequencies [....] » Read More
Despite the fact that numerous attempts have been made to recreate the complex extracellular matrix (ECM) that regulates cell fate, most of them have focused on three-dimensional (3D) culture models. Nevertheless, these models are not suitable for high-throughput screening and qu [....] » Read More
Title : A review of high-power femtosecond MID-IR laser systems for attosecond science and spectroscopy
Mark J Prandolini, Co-Founder of Class 5 Photonics GmbH, University of Hamburg, Germany
A review is presented of current high power, femtosecond (< 100fs), laser systems at mid-infrared (MIR-IR) wavelengths (3 – 12 nm), pumped by Yb-based solid-state lasers. The technology used to achieve a high-power laser source is optical parametric chirped-pulse amplifi [....] » Read More
Title : Azodye nanolayers: Applications in E-paper and security films
Vladimir G Chigrinov, Hong Kong University of Science and Technology, Hong Kong
Photoalignment and photopatterning has been proposed and studied for a long time. Light is responsible for the delivery of energy as well as phase and polarization information to materials systems. It was shown that photoalignment azodye materials could provide high quality align [....] » Read More
Title : Nanoplasmonics enabled multi-dimensional optical multiplexing
Xiangping Li, Jinan University, China
The electromagnetic radiation in the vicinity of metallic nanoparticles or nanostructures can be concentrated and confined to a region with sizes far smaller than the wavelength. Consequently, the augmented electric fields can lead to a variety of amplified photophysical or photo [....] » Read More
Title : Coherent radiation from inverse compton scattering sources by means of particle confinement in an optical lattice
Arya Fallahi, ETH Zurich and IT’IS Foundation, Switzerland
Inverse Compton scattering (ICS) sources also named as optical undulator radiation sources are one of the promising compact tools to generate short wavelength radiation from electron beams based on the relativistic Doppler effect. Nonetheless, these sources suffer from a few shor [....] » Read More
Title : Circular defect in photonic crystal (CirD) laser for intra-chip optical interconnects
Masahiko Kondow, Osaka University, Japan
By the analogy of inter-chip optical interconnects, the target density for intra-chip optical interconnects is estimated to be 10 Pbps/cm2. This value may not be possible anymore by so called Si-photonics that is the state-of-the-art technology, because its target density is as s [....] » Read More
Title : ilicon photonic quantum walk processor
Junjie Wu, National University of Defense Technology, China
Applications of quantum walks can depend on the number, exchange symmetry and indistinguishability of the particles involved, and the underlying graph structures where they move. Here, we show that silicon photonics, by exploiting an entanglement-driven scheme, can realize quantu [....] » Read More
Title : External cavity self-adaptive lasers assisted by distributed feedbacks
Ligang Huang, Chongqing University, China
With excellent properties of the high purity spectrum and long coherent length, narrow-linewidth lasers can be applied in many fields, such as optical quantum information, low-noise microwave generation, high-resolution spectroscopy, precise sensing, high-speed optical coherent c [....] » Read More
Title : Preparation and experimental studies on microfiber sensors
Jin Li, Northeastern University, China
In this presentation, several kinds of microfiber sensors were proposed based on that the strong evanescent field of micron optical fiber is sensitive to the changes of the external environment. The related temperature, gas and load sensing performance has been experimentally dem [....] » Read More
Title : Aberration-insensitive interferometric microscopy
Andriy Shevchenko, Aalto University, Finland
Imaging techniques based on optical correlation measurements and using spatially incoherent illumination have been shown to be able to reduce the effect of optical aberrations. One of such techniques is classical ghost imaging based on spatial intensity correlations in two optica [....] » Read More
Title : Highly sensitive early detection of breast cancer using surface plasmon resonance based fiber optic biosensor by shining gaussian beam: A wave theory based approach
Nabamita Goswami, National Institute of Technology Agartala, India
With the experimental validation, a new approach towards the wave theory based fiber optic biosensor using Gaussian beam for early detection of breast cancer is explored, in a multilayered fiber structure. This structure comprises an unclad multimode fiber with a core diameter of [....] » Read More
Title : Low-power optogenetic control of high-frequency neural codes with single-spike resolution
Sukhdev Roy, Dayalbagh Educational Institute, India
One of the greatest scientific challenge is to understand the working of the brain, the most complex system in the universe. Optogenetics has revolutionized neuroscience research by enabling control of genetically modified neurons in culture, tissue and living animals with light. [....] » Read More
Title : Towards all-optical atom chips based on optical waveguides
Yuri B Ovchinnikov, National Physical Laboratory, United Kingdom
Coherent guiding of atoms in two-colour evanescent light fields of two main single modes of suspended optical rib waveguides is investigated theoretically. Special attention is paid to waveguides of widths larger than the wavelength of light, which provide better lateral stabilit [....] » Read More
Title : Cell-type specific responses of cerebellar GABAergic neurons to photostimulation
Victor Z Han, University of Washington, United States
This experiment was designed to examine the responses of different cell types to photostimulation in the same functional system in an optogenetic model. A Cre-mediated genetic approach was utilized to generate mice in which channelrhodopsin-2 (ChR2), fused with a fluorescent repo [....] » Read More
Title : Plasmonic Sensors based on polymer waveguides
Nunzio Cennamo, University Of Campania Luigi Vanvitelli, Italy
Several developed low-cost, highly sensitive, and simple to realize and to use plasmonic sensor configurations are here presented. In particular, the presented sensor configurations are based on polymer waveguides, such as polymer optical fibers and planar waveguides, that excite [....] » Read More
Title : Robustness of wigner function negativity under the effect of the different physical parameters related to two coupled semiconductor quantum dots system
Fatima Zahra Siyouri, Mohamed V university, Morocco
We analyze theoretically the Wigner function negativity for thermal density matrix of analogous and equidistant two coupled semiconductor quantum dots at different temperatures. In this respect, we explore the quantum influences of the temperature, the external electric field, th [....] » Read More
Title : Designing a smart city infrastructure for luxury and disaster reduction
Mohamed Hamdy Naeem, Arab Academy For Science, Egypt
Modern societies pay great attention to improving the lives and comforts of their citizens. Perhaps one of the most important ways is to provide advanced digital services. This allows everyone to carry out their tasks and business requirements in an easy, both time and energy-sav [....] » Read More
Title : Small size and high sensitive GFRP mandrel based fiber optic hydrophone array
Emrah Ilbey, TOBB University of Economics and Technology, Turkey
Fiber optic systems are used for marine acoustic detection systems, geophysics, oil and gas exploration and military applications. Due to their size, low noise level, high sensitivity, and low cost; fiber-optic interferometric acoustic hydrophones has many advantages with respect [....] » Read More
Title : Performance evaluation of direct detection receivers in UWOC systems for different water types
Kandouci Chahinaz, Djillali Liabes University of Sidi Bel Abbes, Algeria
For a long time, acoustic and Radio-frequency (RF) waves provide to control and command applications in underwater wireless channels at high transmission ranges. However, multimedia and high data rates applications are not compatible with such systems (the capacity in acoustic wi [....] » Read More