Optical design

The paper primarily focuses on the design principles of the AWG subsystem and the Bragg scattering gratings combined with microring resonators for wavelengthselective processing with six wavelengths following the standard ITU-T G.694.1 grid. The components were designed using the optical structure design tools BPM, GratingMode and FullwaveFDTD within the commercial software Rsoft.

8p vithomson 02-07-2024 0 0   Download

In this paper, we present a numerical simulation design of a 1:2 power splitter optical circuit with an evenly distributed 50:50 splitting ratio for all three modes simultaneously. The proposed design is based on the SOI material platform with wafers having a silicon layer thickness of 220nm, in accordance with VLSI chip manufacturing technology standards.

9p vithomson 02-07-2024 0 0   Download

Random numbers are a crucial component of any encryption activity in modern cryptography. Quantum Random Number Generators (QRNGs) produce truly random output strings to replace pseudo-random ones. In this research, the author’s team centered on investigating and scrutinizing the design of a QRNG utilizing optical methods tailored to meet cryptographic standards.

15p vithomson 02-07-2024 0 0   Download

Part 1 book "LAN wiring" included contents: Designing LAN wiring systems; popular LAN topologies; structured cabling systems, LAN wiring for future needs; wire and cable technology for LANs; work area outlets; telecommunication room terminations; patch panels, cross connects, and patch cords; user cords and connectors; open office wiring; fiber optic techniques; gigabit and 10 gigabit cabling technology; wireless LANs

370p dianmotminh04 12-07-2024 1 1   Download

Part 1 of ebook "The design and construction of large optical telescopes" provides readers with contents including: Chapter 1 - Astronomical observations; Chapter 2 - Instruments; Chapter 3 - Design methods and project management; Chapter 4 - Telescope optics; Chapter 5 - Stray light control; Chapter 6 - Telescope structure and mechanisms;...

276p mothoiphong 28-06-2024 1 1   Download

Part 2 of ebook "The design and construction of large optical telescopes" provides readers with contents including: Chapter 7 - Pointing and control; Chapter 8 - Active and adaptive optics; Chapter 9 - Thermal control; Chapter 10 - Integration and verification; Chapter 11 - Observatory enclosure; Chapter 12 - Observatory sites;...

254p mothoiphong 28-06-2024 1 1   Download

A novel Ge15As15Se17Te53 chalcogenide-based photonic crystal fiber with an octagonal cladding was designed which exhibits low confinement loss and high nonlinearity. The dispersion properties were investigated over a wide wavelength range of up to 11 µm.

11p viambani 18-06-2024 1 1   Download

In this work, we design circular lattice photonic crystal fibers using Lumerical Mode Solution software, its hollow core filled with carbon tetrachloride. Optical properties including effective refractive index, chromatic dispersion, nonlinearity, and fiber loss were investigated numerically in detail based on solving Maxwell's wave equations.

14p viambani 18-06-2024 2 1   Download

Part 1 of ebook "Theory and design of charged particle beams" provides readers with contents including: Chapter 1 - Introduction; Chapter 2 - Review of charged particle dynamics; Chapter 3 - Beam optics and focusing systems without space charge; Chapter 4 - Linear beam optics with space charge;...

326p giangdongdinh 28-05-2024 3 2   Download

In this paper, we present an in-house flexible and portable lidar system integrating an inexpensive, passively Q-switched laser Nd: YAG and a detection module operating in both analog and photon counting mode. This system is designed to study the atmospheric boundary layer (BL) and cirrus clouds (CC). The passively Q-switched Nd:YAG pulsed laser, operating at a second-harmonic generation (SHG) wavelength of 532 nm, features a pulse energy up to 200 mJ, a repetition rate of 1 Hz to 15 Hz, and a pulse duration of 15 ns.

14p dianmotminh02 03-05-2024 6 1   Download

This paper presents a new design of Ge20Sb5Se75 large-solid-core- square lattice photonic crystal fiber (PCF) with the first ring of air hole near the core removed. Using the full vector finite element method for anisotropic perfectly matched layers, we numerically examine the dispersion characteristics of the PCF as a function of the wavelength in the mid-infrared range.

10p dianmotminh02 03-05-2024 3 1   Download

Ebook "Narrow and smart textiles" presents the latest developments in narrow fabrics and smart materials from research institutions, machinery building companies and producers of such products, presented during the International Week of Narrow and Smart Textiles in Spring 2018 in Mönchengladbach, Germany. It also demonstrates different applications of braided and woven fabrics.

270p tracanhphuonghoa1007 22-04-2024 2 2   Download

Ebook "A first example of a lyotropic smectic C* analog phase: Design, properties and chirality effects" reports the discovery of the lyotropic counterpart of the thermotropic SmC* phase, which has become famous as the only spontaneously polarized, ferroelectric fluid in nature.

130p tudohanhtau1006 29-03-2024 2 1   Download

Ebook "Noncovalent functionalization of carbon nanotubes: Fundamental aspects of dispersion and separation in water" guides the reader through her multidisciplinary research into the non-covalent functionalization of carbon nanotubes in water. Although one of the most remarkable materials of the 21st century, carbon nanotubes often have limited application because of their intrinsically low solubility and polydispersity.

215p coduathanh1122 27-03-2024 7 1   Download

Ebook "Structure-property relationships in non-linear optical crystals I: The UV-Vis region" is devoted to the UV-vis region and contains six review-type chapters written by seven of our faculty members who are the leading scientists in their fields. These chapters discuss the structural design and characterization of second-harmonic generation materials; the nonlinear optical properties of iodates, selenites, and tellurites; the structure, growth, nonlinear optics, and laser properties of RX3(BO3)4;...

246p coduathanh1122 27-03-2024 1 1   Download

Ebook "Structure-property relationships in non-linear optical crystals II: The IR region" is devoted to the IR region with four review-type chapters that were written by five of our faculty members who are the leading scientists in their field. Prof. G.-C. Guo reviews the crystal growth of large crystals and new mid-infrared second-order NLO pnictide, chalcogenide, and halide materials. Prof. K.-C. Wu discusses the simulation and design of IR second-order NLO metal cluster compounds...

151p coduathanh1122 27-03-2024 4 1   Download

Ebook "Electron energy loss spectrometers: The technology of high performance" has become an indispensable tool in surface analysis. Although the basic physics of this technique is well understood, instrument design has previously largely been left to intuition. This book is the first to provide a comprehensive treatment of the electron optics involved in the production of intense monochromatic beams and the detection of scattered electrons.

194p coduathanh1122 27-03-2024 3 1   Download

Ebook "Energy-dispersive X-ray analysis in the electron microscope" provides an in-depth description of x-ray microanalysis in the electron microscope. It is sufficiently detailed to ensure that novices will understand the nuances of high-quality EDX analysis. Includes information about hardware design as well as the physics of x-ray generation, absorption and detection, and most post-detection data processing. Details on electron optics and electron probe formation allow the novice to make sensible adjustments to the electron microscope in order to set up a system which optimises analysis.

163p coduathanh1122 27-03-2024 3 1   Download

Ebook "Inorganic and organometallic macromolecules: Design and applications" demonstrates the breadth of these properties and some of the specialized analytical techniques that have been developed to characterize them. This book includes a cross-section of novel polymeric materials containing nontraditional atoms and emphasizes current chemical, biological, engineering, ceramic, and optical areas of application. It is intended for those interested in the general areas of biomedicine, catalysis, electronics and light, thermal stability, and analysis of materials.

472p manmanthanhla0201 27-02-2024 6 2   Download

Ebook "Measurement and control of charged particle beams" we have tried to coherently organize this material so as to be useful to designers and operators in the commissioning and operation of particle accelerators. A point of emphasis has been to provide, wherever possible, experimental data to illustrate the particular concept under discussion. Of the data pre­ sented, most are collected from presently existing or past accelerators and we regret the problem of providing original data some of which appear in less accessible publications - for possible omissions we apologize.

376p manmanthanhla0201 27-02-2024 7 1   Download