The “Journal of Lightwave Technology, Vol. 43, Nos 15-16, August 1 – August 15, 2025” is a comprehensive textbook on the subject of lightwave technology, authored by the IEEE and published by OPTIMA Publishing Group. This paperback book is geared towards technology and engineering students as well as professionals in the field, providing detailed information in English on the latest developments in the area of lightwave technology. With a focus on the intersection of technology and science, this journal offers valuable insights and practical applications for those interested in the field of lightwave technology.