Optoelectronics Letters, Volume. 14, Issue 5, 336(2018)

Research on mode division multiplexer with graded-index distribution, low loss and low crosstalk

Qian-qian LIU1... Hong-jun ZHENG1,*, Xin LI1, Cheng-lin BAI1, Wei-sheng HU2 and Ru-yuan YU1 |Show fewer author(s)
Author Affiliations
  • 1Shandong Provincial Key Laboratory of Optical Communication Science and Technology, School of Physics Sci-ence and Information Technology, Liaocheng University, Liaocheng 252059, China
  • 2State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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    A graded-index mode division multiplexer with low loss and low crosstalk is proposed. The transmission channel adopts a pure silica core with large effective area to achieve low attenuation, which effectively reduces the splicing loss with pure silica core few-mode transmission fiber. Low differential mode group delay is realized by using grad-ed-index distribution. Also the effective index difference of the modes is greater than 0.5×10-3 to ensure low crosstalk between modes. The performance of the mode division multiplexer is investigated using the beam propagation method and full-vector finite element method. The result shows that the coupling efficiency of multiplexer is better than .0.479 dB, and the extinction ratio is higher than 31.2 dB in the wavelength of 1 400—1 700 nm. In C band, the aver-age coupling efficiency of all mode channels of multiplexer is better than that of .0.140 dB, which shows flatness. The proposed scheme is an effective way to implement a multiplexer with low crosstalk, low loss, low fusion loss, high coupling efficiency, high extinction ratio and wide operating band.

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    LIU Qian-qian, ZHENG Hong-jun, LI Xin, BAI Cheng-lin, HU Wei-sheng, YU Ru-yuan. Research on mode division multiplexer with graded-index distribution, low loss and low crosstalk[J]. Optoelectronics Letters, 2018, 14(5): 336

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    Paper Information

    Category: Devices

    Received: Apr. 8, 2018

    Accepted: May. 16, 2018

    Published Online: Apr. 16, 2019

    The Author Email: Hong-jun ZHENG (hjzheng@yahoo.com)

    DOI:10.1007/s11801-018-8051-8

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