[4] H.-T. Cho, G.-S. Seo, O.-R. Lim, W. Shin, H.-J. Jang, T.-J. Ahn. Ultraviolet light sensor based on an azobenzene-polymer-capped optical-fiber end. Curr. Opt. Photon., 2, 303-307(2018).
[35] K. Oh, U. C. Paek. Silica Optical Fiber Technology for Devices and Components: Design, Fabrication, and International Standards(2012).