There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Thank you for reading principles of optics electromagnetic theory of propagation interference and diffraction of light. As you may know, people have search hundreds times for their favorite novels like this principles of optics electromagnetic theory of propagation interference and diffraction of light, but end up in harmful downloads. Rather than enjoying a good book with a cup of coffee in the afternoon, instead they are facing with some infectious bugs inside their computer.

Principles Of Optics Electromagnetic Theory Of Propagation Interference And Diffraction Of Light

This chapter introduces the finite element method (FEM) as a tool for solution of classical electromagnetic problems. Although we discuss the main points in the application of the finite element method to electromagnetic design, including formulation and implementation, those who seek deeper understanding of the finite element method should consult some of the works listed in the bibliography section.

Introduction to the Finite Element Method

In this paper, we design a nitrobenzene-core photonic crystal fiber (PCF) with an all-normal dispersion profile. With the designed PCF, highly coherent and octave-spanning supercontinuum (SC) is generated. The SC-based frequency comb is also demonstrated.

Highly Coherent and Octave-Spanning Supercontinuum and Frequency Comb Generation in A Nitrobenzene-Core Photonic Crystal Fiber with All-Normal Dispersion

A novel side-polished long-period fiber grating (LPFG) sensor was proposed and experimentally validated. Side-polished can provide a stronger evanescent field than traditional grating and bring superior sensitivity. The greater the side-polished depth, the higher the refractive index (RI) sensitivity. When <inline-formula> <tex-math notation="LaTeX">$d = 44\,\,\mu \text{m}$ </tex-math></inline-formula>, the RI sensitivity reached 466.85 nm/RIU in the range of 1.3330–1.3580, which is fourfold higher than the LPFG prepared by the electric-arc discharge (EAD) method. A graphene oxide (GO) nano-film is coated on the LPFG to make it realize high sensitivity relative humidity (RH) sensing. Humidity sensitivity reached −0.193 nm/%RH in the range of 40%–80% RH. In addition, side-polished breaks the symmetry of the distribution of the cross-sectional light field, which determines the ability to achieve vector curvature measurement. It shows good sensing performance in the same/opposite bending direction as the side polished surface. When the input light polarization is 90°, the average sensitivity reaches 5.03 and −5.9 nm/<inline-formula> <tex-math notation="LaTeX">$\text{m}^{-1}$ </tex-math></inline-formula> in the range of 0–19.67 <inline-formula> <tex-math notation="LaTeX">$\text{m}^{-1}$ </tex-math></inline-formula>, respectively. This strongly indicates that the fabricated sensors show high sensitivity, low-cost materials, and robust performance and break the limitations of the EDA method to prepare gratings, which have good application potential for biomedicine and the field of construction.

Long-Period Fiber Grating Based on Side-Polished Optical Fiber and Its Sensing Application

A novel approach to generate 60 GHz optical carrier suppression (OCS) millimeter-wave (mm-wave) signal based on the saturated optical parametric amplification (OPA) effect in high non-linear fiber (HNLF) is investigated. In the proposed system, the OPA effect occurs when the signal and pump with 30 GHz frequency interval are set into the high non-linear fiber. By controlling the length of HNLF, OPA effect saturates, and the pump power is delivered in a large extent to the signal and idler light, so a 60 GHz OCS mm-wave is generated. The system does not need high-speed external modulator, high-frequency vibration source or narrow-band filter, which greatly reduces the cost and improves the stability of the radio over fiber (ROF) system. Results show that the 10 Gb/s downstream signal can be transmitted with negligible power penalty.

60 GHz OCS mm-wave generation for ROF system based on saturated parametric amplification effect in HNLF

A pulse compression scheme in tapered chalcogenide horizontal slot waveguide is proposed. The compression factor of more than 100 times in a 1.4 cm-long waveguide is achieved with the peak pulse power of 7.6 W.

Soliton-self Compression in a Tapered Chalcogenide Horizontal Slot Waveguide with Low Peak Pulse Power

Large viewing angle, dense viewpoints, high-resolution 3D light field display technology can achieve large viewing angle, high resolution, and high dynamic reconstruction of the objective world scene light field, which is an important direction for the development of future display technology. The application of advanced 3D light field display technology is getting more and more attention. However, the current lack of efficient access to large viewing angles, dense viewpoints, and high-resolution 3D light field content limits its development and application. To this end, here proposes a dense viewpoints video generation, coding, transmission method, and build a super multi-view 3D light field video live broadcast system. The method and system are composed of 3D light field video generation, light field video coding, light field video transmission and a display part. It can provide viewers with a real-time, high-quality 3D visual experience.

Jinhui Yuan

Papers

Highly Coherent and Octave-Spanning Supercontinuum and Frequency Comb Generation in A Nitrobenzene-Core Photonic Crystal Fiber with All-Normal Dispersion

Long-Period Fiber Grating Based on Side-Polished Optical Fiber and Its Sensing Application

60 GHz OCS mm-wave generation for ROF system based on saturated parametric amplification effect in HNLF

Soliton-self Compression in a Tapered Chalcogenide Horizontal Slot Waveguide with Low Peak Pulse Power

Multi-view 3D light field video broadcast system