摘要
This essay designed a kind of new seven-core fiber with lower crosstalk and loss, and made space division multiplexing transmission experiment based on this seven-core fiber. It is known that crosstalk has the most serious influence in multicore fiber transmission process. Before the experiment, the affecting factors of fiber crosstalk were analyzed through simulation, such as core space, bending radius, and fiber length. Combined with the simulation analysis, the design scheme of multicore fiber with low crosstalk was obtained. Before the fiber design, various factors of influence crosstalk such as the core- to-core distance, bending radius, fiber length and so on. Based on the simulation analysis, conclusion has made on the design scheme of multi-core optimal fiber with low crosstalk. The space division multiplexing and wavelength division multiplexing technology, was adopted to conduct seven-core optical fiber transmission of 58.7kin.The crosstalk of adjacent core was suppressed to as low as 45dB / km, the attenuation of inner core was 0.24dB/ km, the outer cores＇ 0.32dB/km. Different bit error rate （BER） performances were also studied under different conditions, through reasonably designing the system to reduce the error rate, improve the performance of the system, and realize long distance and large capacity transmission with fiber.
This essay designed a kind of new seven-core fiber with lower crosstalk and loss,and made space division multiplexing transmission experiment based on this seven-core fiber.It is known that crosstalk has the most serious influence in multicore fiber transmission process.Before the experiment,the affecting factors of fiber crosstalk were analyzed through simulation,such as core space,bending radius,and fiber length.Combined with the simulation analysis,the design scheme of multicore fiber with low crosstalk was obtained.Before the fiber design,various factors of influence crosstalk such as the coreto-core distance,bending radius,fiber length and so on.Based on the simulation analysis,conclusion has made on the design scheme of multi-core optimal fiber with low crosstalk.The space division multiplexing and wavelength division multiplexing technology,was adopted to conduct seven-core optical fiber transmission of 58.7km.The crosstalk of adjacent core was suppressed to as low as 45 d B/km,the attenuation of inner core was 0.24 d B/km,the outer cores' 0.32 d B/km.Different bit error rate(BER) performances were also studied under different conditions,through reasonably designing the system to reduce the error rate,improve the performance of the system,and realize long distance and large capacity transmission with fiber.
基金
National High Technology 863 Program of China(No.2013AA013301,2013AA013403,2015AA015501,2015AA015502,2015AA015504,2015AA016901)
National NSFC(No.61425022/61522501/61307086/61475024/61275158/61201151/61275074/61205066)
Beijing Nova Program(No.Z141101001814048)
Beijing Excellent Ph.D.Thesis Guidance Foundation(No.20121001302)
the Universities Ph.D.Special Research Funds(No.20120005110003/20120005120007)
the Fundamental Research Funds for the Central Universities with No.2014RC0203
Fund of State Key Laboratory of IPOC(BUPT)
作者简介
Hang Zhou, is a Ph.D Electric Engineering in terests focus on optical sponding author, email： student with the School of BUPT. Her main research insignal processing. The corre- zhouhangbupt@sina.comFu Wang （1990-）, Male, is a Ph.D. student in BUPT. His research interests focus on optical communication and optical network.Borui Li, is a master student in Wuhan National lab for Optoelectronics （WNLO）, Huazhong University of Science and Technology. His research interests focus on high speed optical fiber communication systems.Ming Tong, Professor, School of Optical and Electronic information, Wuhan National Laboratory for Optoelectronics （WNLO）, Huazhong University of Science and Technology. He obtained the Ph.D. degree in Nanyang Technological University （NTU）, Singapore, 2005, respectively. He focused on the research areas including optical fiber amplifiers, high power fiber lasers, generation and propagation of ultra-fast, ultra-short light pulse, nonlinear fiber optics, all-optical signal processing and the design and optimization of high speed optical fiber communication systems.Xiangjun Xin, was born in 1969 in HeBei, China. He received the Ph.D. degree from Beijing University of Posts and Telecommunications （BUPT）, China, in 2004. Currently, he is a Professor of the School of Electric Engineering and a member of the State Key Laboratory of Information Photonics and Optical Communications in BUPT. His main research interests focus on broadband optical transmission technologies, optical sensor and all-optical network.
