Amplified-spontaneous-emission feedback circuit with wide operating bandwidth and dynamic range. - Biswajit Biswas; Md Golam Barkatul Abrar; Kunihiro Tanaka; Ryuga Harada; Kokoro Kitamura; Hiroji Masuda (IEICE Electron. Express, 2023)

Guided spontaneous emission circuit technique with improved optical power resolutions for optical power variation measurement. - Kokoro Kitamura; Md Golam Barkatul Abrar; Kunihiro Tanaka; Ryuga Harada; Hiroji Masuda (IEICE Electron. Express, 2025)