Pogorzelski, P., et al. “A Numerical Tool for Spectral Analysis of Fiber Bragg Gratings Written in Few-Mode Excited Optical Fibers”. Acta Physica Polonica A ISSN 1898-794X , vol. 146, no. 4, Nov. 2024, p. 490, https://doi.org/10.12693/APhysPolA.146.490.