Polymer Waveguide-Based Optical Sensors—Interest in Bio, Gas, Temperature, and Mechanical Sensing Applications. - Khonina, Svetlana N.; Voronkov, Grigory S.; Grakhova, Elizaveta P.; Kazanskiy, Nikolay L.; Kutluyarov, Ruslan V.; Butt, Muhammad A. (Coatings (2079-6412), 2023)