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Characteristic analysis of two-mode fiber Bragg grating

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Abstract

In this paper, the two-mode FBG is intensively studied in simulation and experiment. From the perspective of mode coupling, the coupling wavelength of the two-mode FBG is analyzed theoretically and the Bragg wavelength is calculated in simulation. Meanwhile, the variation of the two-mode FBG’s reflection spectrum is simulated in different power ratios of the LP11 and LP01 modes. Then, a two-mode FBG is written on SMF-28e fiber by using the phase-mask technique and the two-mode FBG’s reflection spectrum has been experimentally measured by adjusting the core-offset distance between the broadband light source’s pigtail and the two-mode fiber which changes the power ratio of LP11 and LP01 modes. Eventually and most importantly, the mode characteristic of the two-mode FBG is studied, and the LP11 mode is successfully obtained by using an experimental system of a two-mode FBG combined with an optical circulator. The results show that the two-mode FBG has a good prospect for obtaining high-order mode and for application in mode division multiplexing/demultiplexing.

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Acknowledgments

This work is supported in part by the National Natural Science Foundation of China (No. 61177066), the Science and Technology Development Plan of Jinlin Province (No. 20120761) and the International Cooperation Project of Changchun Science and Technology Bureau (No. 2011105). The research is also sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry.

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Authors and Affiliations

  1. Department of Optics Communication, College of Communication Engineering, Jilin University, Changchun, 130012, People’s Republic of China

    Li Yan, Guijun Hu, Jian Xiao, Yuxin Chang, Song Bai & Haiyan Wang

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  1. Li Yan
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  2. Guijun Hu
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  3. Jian Xiao
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  4. Yuxin Chang
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  5. Song Bai
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  6. Haiyan Wang
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Correspondence to Guijun Hu.

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Yan, L., Hu, G., Xiao, J. et al. Characteristic analysis of two-mode fiber Bragg grating. Appl. Phys. B 117, 1221–1228 (2014). https://doi.org/10.1007/s00340-014-5946-3

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  • DOI: https://doi.org/10.1007/s00340-014-5946-3

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