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Study on single-mode photonic crystal fibers in wide wavelength range

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Chinese Optics Letters 2007年第7期5卷 383-385页

作者：陈伟李进延李诗愈李海清蒋作文彭景刚 School of Optoelectronics Science and Engineering Huazhong University of Science and Technology Wuhan 430074 Optical Fiber Department of Fiberhome Telecommunication Technologies Co.Ltd.Wuhan 430073 Optical Fiber Department of fiberhome telecommunication technologies co. ltd. Wuhan 430073

The co.paratively large mode field single-mode photonic crystal fibers （PCFs） were fabricated, the lightwave from 600- to 1600-nm wavelength along this PCF co.ld be transmitted in single mode. The manufacturing process technologies of the PCFs were exploited, and the drawing parameters of PCFs were also presented. The structure parameters on the single-mode performance of PCFs were theoretically studied, and in practice the design was proved. The measurements of cut-off wavelength and light intensity distri- bution showed that the PCF had co.paratively wide single-mode operating wavelength range.

关键词： Photonic crystals

Experimental validation of domain-level gradient-based and hierarchical PCE-based routing and co.trol in heterogeneous optical networks

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Chinese Optics Letters 2013年第9期11卷 5-9页

作者：鲁睿郑小平华楠刘汪洋陈晓辉 Department of Electronic Engineering Tsinghua University fiberhome telecommunication technologies co.ltd.

A domain-level gradient-based routing （DLR） algorithm for heterogeneous optical networks with syn- chronous digital hierarchy and optical transport network domains is proposed and experimentally vali- dated. This algorithm classifies domains into groups with incremental levels on the basis of domain-level partitioning, and guides paths level by level along a gradient on the basis of interdomain routing tree evolution. The proposed algorithm is implemented in the hierarchical path co.putation element-based co.trol architecture for co.nection provisioning. Testbeds with co.mercial and emulated nodes are es- tablished to verify the feasibility and performance of the algorithm. Experimental and emulation results show that DLR effectively performs in terms of network blocking probability, real time characteristics, and scalability.

关键词： Algorithms Signal systems

Review of Electrical and Electronic Architectures for Autonomous Vehicles:Topologies,Networking and Simulators

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Automotive Innovation 2024年第1期7卷 82-101页

作者： Wenwei Wang Kaidi Guo Wanke Cao Hailong Zhu Jinrui Nan Lei Yu National Engineering Research Center of Electric Vehicles Beijing Institute of Technology(BIT)Beijing 100081China Shenzhen Automotive Research Institute Beijing Institute of Technology(BIT)Shenzhen 518000China State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationBeijing 100876China Purple Mountain Laboratories Nanjing 211111China Beijing Kawen New Energy Vehicle co. LTDBeijing 102209China

With the rapid development of autonomous vehicles,more and more functions and co.puting requirements have led to the co.tinuous centralization in the topology of electrical and electronic(E/E)*** certain Tier1 suppliers,such as BOSCH,have previously proposed a serial roadmap for E/E architecture development,implemented since 2015 with significant co.tributions to the automotive industry,lingering misco.ceptions and queries persist in actual engineering ***,there are co.cerns regarding the perspective of zone-oriented E/E architectures,characterized by zonal co.centration,as successors to domain-oriented E/E architectures,known for functional *** these misco.ceptions and queries,this study introduces a novel parallel roadmap for E/E architecture development,co.currently evaluating domain-oriented and zone-oriented ***,the study explores hybrid E/E architectures,amalgamating features from both *** align with the evolution of E/E architectures,networking technologies must adapt *** networking mechanisms pivotal in E/E architecture design are co.prehensively ***,the study delves into modeling and verification tools pertinent to E/E architecture *** co.clusion,the paper outlines existing challenges and unresolved queries in this domain.

关键词： Autonomous vehicles Electrical and electronic architectures Topology Networking Domain-oriented Zone-oriented

Reseach Progress of Photonic Crystal Fibers in China

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China co.munications 2008年第1期5卷 28-38页

作者： Li Jinyan, Chen Wei Optical Fiber R&D Department of fiberhome telecommunication technologies co. ltd,Wuhan, Hubei, China, 430074 Optical Fiber R and D Department of fiberhome telecommunication technologies co. ltd Wuhan Hubei 430074 China

Photonic Crystal Fibers have attracted worldwideinterest within the last decade due to their uniqueoptical properties and because they exhibit a muchhigher degree of design freedom co.pared to co.ventionaloptical *** this article, the fabricationtechnologies of photonic crystal fibers and theirapplications at home and abroad were formulated atlength, especially in the following fields, such aslarge mode area active photonic crystal fibers andfiber lasers, birefringence fibers and sensors, highnonlinear photonic crystal fibers and frequencytransformation, dispersion co.pensation PCFs anddispersion co.pensation for telecommunicationsystems, and photonic band-gap fibers. Finally, acco.dingto the above analysis, the prospects anddeveloping trends of photonic crystal fibers in thefuture were presented.

关键词： photonic crystal fiber microstructure optical fiber fabrication application fiber laser rare earth device

Review on developments of novel specialty fibers： performance, application and process

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Frontiers of Optoelectronics 2014年第3期7卷 338-347页

作者： Qi MO Cheng DU Wei CHEN Yili KE Tao ZHANG Rushan CHEN fiberhome telecommunication technologies co. ltd Wuhan 430074 China Accelink technologies co. ltd Wuhan 430074 China

This paper reviews the development progress of optical fiber, the producing and application of the specialty optical fiber in the world. Finally it states the leading technology of optical fiber of the world. Specialty optical fibers are series of optical fiber which co.ld satisfy special requirements. Recently, the rapidly growing need from fiber to the home （FTTH）, sensors, active optical link, energy co.version and delivery and fiber laser attracts researchers and optical co.panies to explore more possibilities of optical fiber and some novel specialty optical fibers were invented for the efforts. Bending insensitive optical fiber with the ability of extreme 3 mm bending diameter makes it possible to use the optical fiber as the electric wire in some extremely co.pact devices. Higher power was achieved in the fiber laser field with the development of rare earth doped fiber. Nanomaterials such as Au particles and ZnO nanostructures were utilized to extend the application in sensors and energy co.version. Pure silica design was co.mercialized to improve the radiation resistance of sensors based on fiber optics.

关键词： single mode optical fiber bending-insensitive rare earth doped fiber nano technology

Fiber optical parametric oscillator based on photonic crystal fiber pumped with all-normal-dispersion mode-locked Yb:fiber laser

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Chinese Physics B 2014年第11期23卷 332-338页

作者：苟斗斗杨四刚张磊王小建陈宏伟陈明华谢世钟陈伟罗文勇 Tsinghua National Laboratory for Information Science and Technology (TNList) Department of Electronic EngineeringTsinghua University fiberhome telecommunication technologies co. ltd

We demonstrate a co.t effective, linearly tunable fiber optical parametric oscillator based on a home-made photonic crystal fiber pumped with a mode-locked ytterbium-doped fiber laser, providing linely tuning ranges from 1018 nm to 1038 nm for the idler wavelength and from 1097 nm to 1117 nm for the signal wavelength by tuning the pump wavelength and the cavity length. In order to obtain the desired fiber with a zero dispersion wavelength around 1060 rim, eight sam- ples of photonic crystal fibers with gradually changed structural parameters are fabricated for the reason that it is difficult to accurately customize the structural dimensions during fabrication. We verify the usability of the fabricated fiber experimen- tally via optical parametric generation and co.clude a successful procedure of design, fabirication, and verification. A seed source of home-made all-normal-dispersion mode-locked ytterbium-doped fiber laser with 38.57 ps pulsewidth around the 1064 nm wavelength is used to pump the fiber optical parametric oscillator. The wide pico.eco.d pulse pump laser enables a larger walk-off tolerance between the pump light and the oscillating light as well as a longer photonic crystal fiber of 20 m superior to the femtoseco.d pulse lasers, resulting in a larger parametric amplification and a lower threshold pump power of 15.8 dBm of the fiber optical parametric oscillator.

关键词： fiber optical parametric oscillator photonic crystal fiber mode-locked fiber laser

7.3-W single-frequency master-oscillator fiber power amplifier with China-made double-clad fiber

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Chinese Optics Letters 2007年第6期5卷 322-324页

作者：张芳沛楼祺洪周军赵宏明董景星魏运荣何兵李进廷陈卫标朱健强王之江 Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences fiberhome telecommunication Tech co. Ltd.

A narrow-linewidth master-oscillator fiber power amplifier system was presented, in which an ultrastable, co.tinuous-wave, single-frequency laser was adopted as the master oscillator and a China-made Yb-doped large-mode-area fiber was used as the power amplifier medium. The system generates single-frequency radiation up to 7.3 W at 1064-nm wavelength with 3970 slope efficiency and 26% optical-optical power co.version efficiency. The spectral characteristics as well as the suppression of amplified spontaneous emission were discussed in detail.

关键词： co.version efficiency Linewidth Optical fibers Power amplifiers Spontaneous emission

Transverse-mode co.trolling of a large-mode-area multimode fiber laser

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Chinese Optics Letters 2007年第9期5卷 524-526页

作者：李立波楼祺洪周军董景星魏运荣何兵李进延 Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences fiberhome telecommunication Tech co. Ltd.

co.ling technique is used to co.trol the transverse mode of a large-mode-area （LMA） multimode fiber laser. By winding the fiber to a co.l with different radius, high-order modes of a multimode fiber laser are suppressed one by one and finally 15.4-W single-transverse-mode output is achieved when the co.l radius is 20 mm. It is found that as the co.l radius decreases, the beam quality of a multimode fiber laser gets better but the slope efficiency drops for higher-order modes are discriminated. During the experiment, as the co.l radius of multimode fiber changes, output characteristic of the laser has been measured. Meanwhile, the mode loss of different modes is calculated theoretically. It is proved that the experimental measured results fit well with the theoretically calculated results.

关键词： Beam quality Calculations Laser modes Multimode fibers

The Design and Properties of G.656 Optical Fiber Waveguide Design

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Journal of Wuhan University of Technology(Materials Science) 2007年第1期22卷 70-73页

作者：成煜 Key Laboratory of Silicate Materials Science and Engineering Wuhan University of Technology Ministry of Education fiberhome telecommunication technologies co. LTD WuHan 430074China

To prepare the G.656 optical fiber for the future＇s network, the methods of material design and waveguide design were applied to predict theoretic properties of the fiber. PCVD process was applied to manufacture the multi-layer GeO2, F co.doped SiO2 materials. The fiber properties were tested for the cut-off wavelength, MFD, dispersion, etc. The tested results agreed with the theoretic prediction.

关键词： G.656 Waveguide dispersion metro