Home > Archive>Volume 14, Issue 2, 2018 >81-83. DOI:https://doi.org/10.1007/s11801-018-7141-y
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All-fiber mode converter based on superimposed long period fiber gratings
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1. School of Information Science and Engineering, Yanshan University, Qinhuangdao 066004, China ;2. College of Mechanical and Electrical Engineering, Hebei Normal University of Science & Technology, Qinhuangdao 066004, China;3. Key Laboratory for Special Fiber and Fiber Sensor of Heibei Province, Qinhuangdao 066004, China

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    Abstract:

    In this paper, a novel broadband all-fiber mode converter is proposed and experimentally demonstrated. Through writing a pair of superimposed long period fiber gratings (SLPFGs) in tow-mode fiber (TMF) with a CO2 laser, the mode converter can realize the conversion from LP01 to LP11 owing to the phase matching condition. Numerical and experimental results show that the bandwidth of this mode converter is 3 times broader than that of a single grating converter. The converter has low loss, high coupling efficiency, small size and is easy to fabricate, so it can be widely used in mode-division multiplexing.

    Reference
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    [6] Nicolas K. Fontaine, Sergio G. Leon-Sava, Roland Ryf, Joel R. Salazar Gil, Burcu Ercan and Joss Bland-Hawthorn, Mode-Selective Dissimilar Fiber Photonic-Lantern Spatial Multiplexers for Few-Mode Fiber, European Conference and Exhibition on Optical Communication, 1 (2013).
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    [11] MA Long, PEI Li, The Theory and Application of Overlapping Cascade Long-Period Fiber Grating, Beijing Jiaotong University, 2015. (in Chinese)
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XUE Yan-ru, BI Wei-hong, JIN Wa, TIAN Peng-fei, JIANG Peng, LIU Qiang, JIN Yun. All-fiber mode converter based on superimposed long period fiber gratings[J]. Optoelectronics Letters,2018,14(2):81-83

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History
  • Received:June 26,2017
  • Revised:November 21,2017
  • Online: April 24,2018
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