Complex pattern transmission through multimode fiber under diverse light sources

Multimode fibers with high information capacity and ultra-thin diameter offer new possibilities for non-invasive endoscopy and remote high-speed secure communication. However, due to their sensitivity, special demands are thus raised on the light sources, which act as both lighting and information carrier. We build a single-arm multimode fiber image transmission system. The impact of five different sources on transmission quality is systematically compared and analyzed. High-quality transmission of complex grayscale patterns is achieved with inverse transmission matrix. The measured structural similarity exceeds 0.65. Experimental results indicate that random fiber laser with high time-domain stability is suitable for single-fiber imaging. This work is conducive to further study of fiber imaging and provides guidance for novel fiber communication and flexible endoscopy. (C) 2022 Author(s).