搜索结果: 1-15 共查到“光学工程 refractive index”相关记录19条 . 查询时间(0.015 秒)
光电信息大讲堂第210期：From discovery of random Raman lasing via natural Rayleigh scattering in ultra-long fibers to unique lasing and sensing features of multimode and multicore fibers with fs-inscribed regular and random 3D refractive-index structures
拉曼光纤激光器 输出光束 折射率光纤
2023/4/17
在二极管泵浦的拉曼光纤激光器的多模渐变折射率光纤中，通过飞秒脉冲刻写FBG，可产生接近衍射极限的输出光束。这一技术已经应用于工业（通信、生物医学、材料加工、基础设施和能源行业）中的各种激光和传感器系统。从超长光纤自然瑞利散射引起的随机拉曼激光的发现出发，主讲人将介绍使用fs脉冲刻写具有规则/随机的3D折射率结构的多模、多芯光纤的技术，以及新型光纤所具有的独特激光和传感性能，这种新型光纤有望在物理上...
Break Up of N-Soliton Bound State in a Gradient Refractive Index Waveguide with Nonlocal Nonlinearity
N-Soliton Bound State GRIN Waveguide Nonlocal Nonlinearity Conserved Implicit Crank-Nicolson Method Inverse Scattering Technique
2013/1/30
We study the propagation of N-soliton bound state in a triangular gradient refractive index waveguide with nonlocal nonlinearity. The study is based on the direct numerical solutions of the model and ...
Extraordinarily high spectral sensitivity in refractive index sensors using multiple optical modes
Sensors Surface plasmons Resonators
2015/8/10
The extraordinary spectral sensitivity of surface plasmon resonance (SPR) sensors is commonly attributed to the modal overlap or unique dispersion of surface plasmons. In contrast to this belief, we s...
An HC-PCF Fluorescence Spectrocopy for Detection of Microsphere Samples Based on Refractive Index Scaling Law
Optical Fiber Hollow-Core Photonic Crystal Fiber Refractive Index Scaling Fluorescence Spectroscopy
2013/1/30
This paper illustrates an efficient fluorescence detection of micro particles using hollow-core photonic crystal fibers (HC-PCFs) by applying the refractive index (RI) scaling law. The variations in t...
High Refractive Index Bi2O3-B2O3-TeO2 Glass with High Visible-NIR Transmittance
Fiber materials Optical properties
2015/6/4
We have newly developed Bi 2 O 3 -B 2 O 3 -TeO 2 glass system. This glass shows high transmittance in visible and near-IR wavelength, in spite of their high refractive index and optical nonlinearity.
Recent Progress in Optical Fiber Refractive Index Profiling
Optical Fiber Refractive Index
2015/5/18
Recent optical fiber refractive index profile measurement advances include quantitative phase measurement, multi-wavelength spectroscopy, and computerized tomography. These new techniques, and their a...
A Study on Refractive Index Changes Induced by Heating the Long-Period Fiber Gratings in Different Temperatures
Refractive Index Different Temperatures ong-Period Fiber Gratings
2015/5/15
A silica fiber and long-period gratings were heated to clarify the effect of the glass structure and the residual stress relaxations on the fiber index profile and resonance wavelengths.The profile ch...
Refractive index profiles of planar waveguides produced in electrodiffusion processes
planar waveguides field-assisted ion-exchange
2011/4/26
The paper presents the results of investigation which demonstrate the possibilities to shape refractive index profiles of planar waveguides produced in glass using the ion exchange technique with the ...
Refractive-index sensor based on tilted fiber bragg grating interacting with multimode fiber.
optical fiber sensors tilted fiber Bragg gratings refractive index measurement
2013/5/27
A simple refractive-index fiber sensor based on a tilted Bragg fiber grating (TFBG) interacting with multimode fiber (MMF) is described. The sensor structure is formed by insertion of a small section ...
Silicon-on-Insulator Ring-Shaped Photonic Crystal Waveguides for Refractive Index Sensing
Integrated optics devices Sensors Photonic crystals
2015/6/4
We present an integrated refractive index sensor based on a ring-shaped photonic crystal waveguide. We measured the shift in cut-off wavelength for different ambient refractive indices and we observed...
Three-Dimensional Metamaterials with an Ultrahigh Effective Refractive Index over a Broad Bandwidth
Three-Dimensional Metamaterial Ultrahigh Effective Refractive Index Broad Bandwidth
2015/8/10
The authors introduce a general mechanism, based on electrostatic and magnetostatic considerations,for designing three-dimensional isotropic metamaterials that possess an enhanced refractive index ove...
Silica-based versus silica-titania sol–gel materials – comparison of the physical properties: surface tension, gelation time, refractive index and optical transmittance
silica-titania sol–gel materials surface tension
2011/5/6
Knowledge of the physical parameters and optical constants of sols and sol–gel materials is important in view of their possible applications. In this work, silica and silica-titania sols were examined...
Time variation of refractive index in the core of active fiber under pulsed optical pumping
Time variation refractive index active fiber pulsed optical pumping
2015/8/4
The kinetics of refractive index change in active fiber under pulsed cladding-coupled optical pumping was investigated using interferometric technique. Relaxation processes after lasing threshold was ...
High-resolution Refractive Index Sensing using Solid-core Photonic Crystal Fibers with High Index Infiltrations
High-resolution Refractive Index Sensing Solid-core Photonic Crystal Fibers
2015/8/4
We report the experimental demonstration of a refractive index sensor using scalable bandgap shift in two different structures of solid-core photonic crystal fibers. Resolution ~10 -7 refractive index...
Microchannelled Chirped Fibre Bragg Grating Based Refractive Index Sensor Formed by Femto-Second Laser Processing and HF-etching
Chirped Fibre Bragg Grating Refractive Index Sensor Formed Femto-Second Laser Processing HF-etching
2015/8/3
The microchannelled chirped fibre Bragg grating (MCFBG) was fabricated using femtosecond laser processing and HF-etching. Intrinsical refractive-index sensitivity induced by the microchannel makes MCF...