Gut, Kazimierz, and Tomasz Herzog. “Analysis and Investigations of Differential Interferometer Based on a Polymer Optical Bimodal Waveguide”. Photonics Letters of Poland 7, no. 2 (July 1, 2015): pp. 56–58. Accessed May 20, 2024. https://photonics.pl/PLP/index.php/letters/article/view/7-20.