Microbend gratings explained

Microbend grating is a convenient method to couple light from one guided fiber mode into another. Due to its antisymmetric nature of perturbation, it can be used to couple only into antisymmetric modes. Microbend gratings are easily tunable for a wide range of wavelengths.[1]

Notes and References

  1. J. N. Blake, B. Y. Kim, H. E. Engan, and H. J. Shaw, “Analysis of intermodal coupling in a two-mode fiber with periodic microbends”. Optics letters. 1987;12(4):281-3.

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