Effect of Temperature Change on the Performance of Laser Diode at 450 nm for Submarine Optical Communications Topics: Fiber Lasers and Applications; Optical Materials and Devices; Photonic and Optoelectronic Materials and Devices; Semiconductor Lasers and Leds In Proceedings of the 8th International Conference on Photonics, Optics and Laser Technology PHOTOPTICS - Volume 1, 40-44, 2020 , Valletta, Malta