Liu Ming, Zhang Ming-Jiang, Wang An-Bang, Wang Long-Sheng, Ji Yong-Ning, Ma Zhe. Generation of ultra-wideband signals by directly current-modulating distributed feedback laser diode subjected to optical feedbackJ. Acta Physica Sinica, 2013, 62(6): 064209. DOI: 10.7498/aps.62.064209