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Frontier research of ultra-high-speed ultra-large-capacity and ultra-long-haul optical transmission

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Frontiers of Optoelectronics 2016年第2期9卷 123-137页

作者： Daojun XUE Shaohua YU Qi YANG Nan CHI Lan RAO Xiangjun XIN Wei LI Songnian FU Sheng CUI Demin LIU Zhuo LI Aijun WEN Chongxiu YU Xinmei WANG State Key Laboratory of optical Communication Technologies and Networks Wuhan Research Institute of Posts and Telecommunications Wuhan 430074 China School of Information Science and Technology Fudan University Shanghai 200433 China State Key Laboratory of Information Photonics and optical Communications Beijing University of Posts and Telecommunications Beijing 100876 China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China School of Optics and Electronic Information Huazhong University of Science and Technology Wuhan 430074 China State Key Laboratory of Integrated Services Networks Xidian University Xi'an 710126 China

Ultra-high-speed, ultra-large-capacity and ultra-long-haul （3U） are the forever pursuit of optical communication. As a new mode of optical communication, 3U transmission can greatly promote next generation optical internet and broadband mobile communication network development and technological progress, therefore it has become the focus of international high-tech intellectual property competition ground. This paper introduces the scientific problems, key technologies and important achievements in 3U transmission research.

关键词： ultra-high-speed ultra-large-capacity ultra-long-haul optical transmission high spectral efficiency,parametric amplification dispersion management

Effect of Overlaid Material on optical transmission of Side-Polished Fiber Made by Wheel Side Polishing

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Journal of Electronic Science and Technology of China 2008年第4期6卷 445-448页

作者： Zhe Chen Chun-He Bai Key Laboratory of Disaster Forecastand Control in Engineering （＇Ministry of Education of China） JinanUniversity Guangzhou and Department of Optoelectmnic EngineeringJinan University Guangzhou 510632 China

The performance of optical power transmission through a side-polished fiber on which materials of different refractive indices were overlaid is investigated. The experiments show that the transmitted optical power through the side-polished fiber varies with the refractive index of the overlaid material. The result of our experiments fits well the theoretical calculation. Side-polished fiber manufactured by wheel polishing method can be used not only to control optical power transmission through the fiber core but also as a refractive index sensor.

关键词： optical fiber optical power optical transmission refractive index side polished fiber.

Application of ultra-long span optical transmission technology in Anhui Power Grid

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Application of ultra-long span optical transmission technolo...

Mode division multiplexing:from photonic integration to optical fiber transmission[Invited]

2011 World Congress on Engineering and Technology(CET 2011)

Electric power system of long distance transmission requires constructing a large number of relay stations, and therefore bringing increasing investment costs, high maintenance difficulty, poor reliability and other problems. In order to resolving the problem, in accordance with actual situation of Anhui Power Grid, this paper puts forward a proposal of 10G system ultra-long span optical transmission that can achieve transmission 210km with no relay. The design uses currently mature optical amplification, by improving the luminous power of the transmitter and the sensitivity of the receiver and dispersion compensation for the dispersion problems that arise in the transmission process in order to achieve the ultra-long span transmission. The results of the test prove that the design’s indications are normal, and it improves the reliability of power grid.

关键词： electric power system ultra-long span optical transmission optical amplification design proposal.

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Chinese Optics Letters 2021年第9期19卷 29-52页

作者： Jiangbing Du Weihong Shen jiacheng Liu Yufeng Chen Xinyi Chen Zuyuan He State Key Laboratory of Advanced optical Communication Systems and Networks Shanghai Jiao Tong UniversityShanghai 200240China

To overcome the capacity crunch of optical communications based on the traditional single-mode fiber(SMF), different modes in a few-mode fiber(FMF) can be employed for mode division multiplexing(MDM). MDM can also be extended to photonic integration for obtaining improved density and efficiency, as well as interconnection capacity. Therefore, MDM becomes the most promising method for maintaining the trend of "Moore’s law" in photonic integration and optical fiber transmission. In this tutorial, we provide a review of MDM works and cutting-edge progresses from photonic integration to optical fiber transmission, including our recent works of MDM low-noise amplification, FMF fiber design, MDM Si photonic devices, and so on. Research and application challenges of MDM for optical communications regarding long-haul transmission and short reach interconnection are discussed as well. The content is expected to be of important value for both academic researchers and industrial engineers during the development of next-generation optical communication systems,from photonic chips to fiber links.

关键词： mode division multiplexing photonic integration few-mode fiber optical transmission optical interconnection

Structure design and property of multiple-basis-element(MBE)alloys flexible films

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Nano Research 2022年第6期15卷 4837-4844页

作者： Hao Huang Peter K.Liaw Yong Zhang Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming Qinghai UniversityXining 810016China State Key Laboratory of Advanced Metals and Materials University of Science and Technology BeijingBeijing 100083China Department of Materials Science and Engineering The University of TennesseeKnoxvilleTN 37996-2100USA Shunde Graduate School University of Science and Technology BeijingFoshan 528399China

A controlled wrinkled structure is a simple and effective approach to achieve unique properties and has been widely used in flexible *** this study,we reported a substrate prestrain method for fabricating wrinkle-structured Zr52Ti34Nb14 multiplebasis-element(MBE)alloy films as biocompatible *** in the film thickness and substrate prestraining enabled a precise control of the amplitude and wavelength of the wrinkled structures,ranging from micrometers to ***,owing to the flexibility of the wrinkled structures,the wrinkle-structure pattern could be adjusted by simply relaxing or further stretching of the substrate,leading to dynamically tunable transmittance and wetting *** result not only reveals Zr52Ti34Nb14 MBE alloy films as a potential flexible material,but also provides a new structural design approach for other MBE alloy systems.

关键词： multiple-basis-element alloy thin films microstructures optical transmission wetting behavior

Analysis and experimentation of key technologies in service-oriented optical internet

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Science China(Information Sciences) 2011年第2期54卷 215-226页

作者： JI YueFeng, REN DanPing, LI Hui, LIU XueJun & WANG ZhengZhong Key Laboratory of Information Photonics and optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China 1. Key Laboratory of Information Photonics and optical Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

To satisfy diverse bandwidth-intensive applications envisioned in the internet of the future, research on a distributed optical internet, enabling efficient utilization of geographically distributed resources, has become attractive. The deployment of such a network, however, has its own technical challenges, including network architecture, resource management, and high-speed transmission. To address these issues, a service-oriented-architecture-based distributed optical internet architecture is proposed. Thereafter, key technologies of an optical internet, such as optical multicasting, distributed resource control, and high-speed transmission, are analyzed and investigated. The proposed schemes are verified through experimentation and simulation.

关键词： optical internet service-oriented distributed optical networks optical multicasting optical transmission

Fabrication of highly oriented ZnO nanorod arrays by galvanostatic deposition

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Rare Metals 2008年第5期27卷 513-516页

作者： YE Feng WANG Xindong YANG Zhuanyu LI Jingjing LIN Caishun WANG Tongtao Metallurgical and Ecological Engineering School University of Science and Technology Beijing Beijing 100083 China

Highly oriented ZnO nanorod arrays were successfully prepared on the indium tin oxide （ITO） substrate using a galvanostatic electrodeposition method. The ITO substrate was pretreated with ZnO nanoparticles via simple low-temperature solution route. The crystallinity, microstructure of surface, and optical properties of the obtained ZnO were characterized by X-ray diffraction, scanning electron microscope, and transmittance spectrum. The results indicate that the average diameter of ZnO nanorod arrays is about 30 nm, and the narrow size distribution ranges from 20 to 50 nm. The nanorod arrays are growing along wavelength of incident is over 380 nm, the ZnO nanorod arrays growth mechanism of the nanorod arrays was discussed. [001] direction with an orientation perpendicular to the substrate. When the show a high optical transmission of above 95%. Furthermore, the possible

关键词： ZnO nanorod arrays electrodeposition mechanism optical transmission

ZnSe/ITO thin films:candidate for CdTe solar cell window layer

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Journal of Semiconductors 2017年第9期38卷 14-18页

作者： A.A.Khurram M.Imran Nawazish A.Khan M.Nasir Mehmood Industrial Technology Development National Centre for PhysicsIslamabadPakistan Materials Science Laboratory Department of PhysicsQuaid-i-Azam UniversityIslamabadPakistan Optics Lab PINSTECHNilorePakistan

The crystal structure, electrical and optical properties of ZnSe thin films deposited on an In203 ：Sn （ITO） substrate are evaluated for their suitability as the window layer of CdTe thin film solar cells. ZnSe thin films of 80, 90, and 100 nm thickness were deposited by a physical vapor deposition method on Indium tin oxide coated glass substrates. The lattice parameters are increased to 5.834 A when the film thickness was 100 rim, which is close to that of CdS. The crystallite size is decreased with the increase of film thickness. The optical transmission analysis shows that the energy gap for the sample with the highest thickness has also increased and is very close to 2.7 eV. The photo decay is also studied as a function of ZnSe film thickness.

关键词： ZnSe thin films ITO substrate XRD optical transmission photodecay

Development of Modified Glasses by Transparent, Functional Hybrid Sol-Gel Nano-Ceramic Coatings, a Comparative Study

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World Journal of Engineering and Technology 2024年第1期12卷 170-184页

作者： Md. Barkat Ullah Yeasmin Akter Khodeja Afrin Md. Saiful Quddus Department of Applied Chemistry and Chemical Engineering Noakhali Science and Technology University Noakhali Bangladesh Bangladesh Council of Scientific and Industrial Research (BCSIR) Dhaka Bangladesh

This paper concentrates on the development of glasses with self-cleaning surfaces exhibiting high water contact angles. In this study, we prepared super-hydrophobic nano-ceramic coated glass based on titania & silica using simple sol-gel & dip coating methods and studied the best composition of the coatings by altering ratios of titanium tetraisopropoxide (TTIP)/tetraethyl orthosilicate (TEOS) with different homogenizing agents. We characterized the coatings by surface roughness measurement, percentage of optical transmission, static contact angle, near-infrared (NIR) transmission, and diffuse reflectance. The fabrication of coatings on glass substrates played an important role in increasing the water contact angle of about 95° and visible & NIR transmission of about 90%. We compared our modified glass substrate with commercial low emissivity (Low E) glass using X-ray diffraction (XRD) analysis, which showed pure amorphous surface claiming excellent wettability and thus the prepared glass substrate could have a variety of applications in different fields.

关键词： Sol-Gel Nano-Ceramic Coatings Self-Cleaning Glass Water Contact Angle optical transmission