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Acta Optica Sinica, Volume. 39, Issue 5, 0506005(2019)

Simulation Analysis of Far and Near Field Scrambling Properties of Fibers and Double-Fiber Scrambler

Ping Chen1, Kai Huang1, Huiqi Ye2,3、*, Jian Han2,3, Zhibo Hao2,3, and Dong Xiao2,3
Author Affiliations
  • 1 Institute of Modern Optics, College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China
  • 2 Nanjing Institute of Astronomical Optics & Technology, National Astronomical Observatories, Chinese Academy of Sciences, Nanjing, Jiangsu 210042, China;
  • 3 Key Laboratory of Astronomical Optics & Technology, Chinese Academy of Sciences, Nanjing, Jiangsu 210042, China;
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    Figures & Tables(9)
    Ray tracing in circular fiber

    Fig. 1. Ray tracing in circular fiber

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    Flow chart of single ray tracing in fiber

    Fig. 2. Flow chart of single ray tracing in fiber

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    Geometry of simulation

    Fig. 3. Geometry of simulation

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    Near filed outputs under different input deviations d/R. (a) Circular fiber, d/R=0; (b) circular fiber, d/R=0.4; (c) circular fiber, d/R=0.8; (d) octagonal fiber, d/R=0; (e) octagonal fiber, d/R=0.4; (f) octagonal fiber, d/R=0.8

    Fig. 4. Near filed outputs under different input deviations d/R. (a) Circular fiber, d/R=0; (b) circular fiber, d/R=0.4; (c) circular fiber, d/R=0.8; (d) octagonal fiber, d/R=0; (e) octagonal fiber, d/R=0.4; (f) octagonal fiber, d/R=0.8

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    Projection of single skew ray propagation trajectory at end face. (a) Circular fiber; (b) octagonal fiber

    Fig. 5. Projection of single skew ray propagation trajectory at end face. (a) Circular fiber; (b) octagonal fiber

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    Far field patterns. (a)(d)(g) Input; (b)(e)(h) output of octagonal fiber; (c)(f)(i) output of circular fiber

    Fig. 6. Far field patterns. (a)(d)(g) Input; (b)(e)(h) output of octagonal fiber; (c)(f)(i) output of circular fiber

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    Double-fiber scrambler based on ball lens. (a) Structure of double-fiber scrambler; (b) ball lens used for exchanging far and near fields

    Fig. 7. Double-fiber scrambler based on ball lens. (a) Structure of double-fiber scrambler; (b) ball lens used for exchanging far and near fields

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    Near field patterns outputted by double-fiber scrambler. (a) Circular fiber, circular input pupil, d/R=0.4; (b) circular fiber, circular input pupil, d/R=0.8; (c) circular fiber, ring input pupil, d/R=0.4; (d) circular fiber, ring input pupil, d/R=0.8; (e) octagonal fiber, circular input pupil, d/R=0.4; (f) octagonal fiber, circular input pupil, d/R=0.8; (g) octagonal fiber, ring input pupil, d/R=0.4; (h) octagonal fiber, ring input pupil, d/R=0.8

    Fig. 8. Near field patterns outputted by double-fiber scrambler. (a) Circular fiber, circular input pupil, d/R=0.4; (b) circular fiber, circular input pupil, d/R=0.8; (c) circular fiber, ring input pupil, d/R=0.4; (d) circular fiber, ring input pupil, d/R=0.8; (e) octagonal fiber, circular input pupil, d/R=0.4; (f) octagonal fiber, circular input pupil, d/R=0.8; (g) octagonal fiber, ring input pupil, d/R=0.4; (h) octagonal fiber, ring input pupil, d/R=0.8

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    Far field patterns outputted by double-fiber scrambler. (a) Circular fiber, circular input pupil, d/R=0.4; (b) circular fiber, circular input pupil, d/R=0.8; (c) circular fiber, ring input pupil, d/R=0.4; (d) circular fiber, ring input pupil, d/R=0.8; (e) octagonal fiber, circular input pupil, d/R=0.4; (f) octagonal fiber, circular input pupil, d/R=0.8; (g) octagonal fiber, ring input pupil, d/R=0.4; (h) octagonal fiber, ring input pupil, d/R=0.8

    Fig. 9. Far field patterns outputted by double-fiber scrambler. (a) Circular fiber, circular input pupil, d/R=0.4; (b) circular fiber, circular input pupil, d/R=0.8; (c) circular fiber, ring input pupil, d/R=0.4; (d) circular fiber, ring input pupil, d/R=0.8; (e) octagonal fiber, circular input pupil, d/R=0.4; (f) octagonal fiber, circular input pupil, d/R=0.8; (g) octagonal fiber, ring input pupil, d/R=0.4; (h) octagonal fiber, ring input pupil, d/R=0.8

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    Ping Chen, Kai Huang, Huiqi Ye, Jian Han, Zhibo Hao, Dong Xiao. Simulation Analysis of Far and Near Field Scrambling Properties of Fibers and Double-Fiber Scrambler[J]. Acta Optica Sinica, 2019, 39(5): 0506005

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    Paper Information

    Category: Fiber Optics and Optical Communications

    Received: Dec. 12, 2018

    Accepted: Jan. 25, 2019

    Published Online: May. 10, 2019

    The Author Email:

    DOI:10.3788/AOS201939.0506005

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology