Sulikhah SLee S.-L.HEN-WAI TSAO2021-09-022021-09-022020https://www.scopus.com/inward/record.uri?eid=2-s2.0-85098682901&doi=10.1109%2fOECC48412.2020.9273731&partnerID=40&md5=cd3c8ac45b3c58f1ce5221e96a14e5c4https://scholars.lib.ntu.edu.tw/handle/123456789/580823Dual contact coupled cavity DFB-LD is proposed and optimized for 56-Gbaud PAM-4 signals. 3-dB bandwidth of 53.6-GHz are demonstrated by 100-m long region 1 and 140-m long region 2, obtained clear eye openings with ER>8-dB. ? 2020 IEEE.Electronics industry; Coupled cavity; Eye openings; Performance analysis; Phase shifted; Electronics engineeringconference paper10.1109/OECC48412.2020.92737312-s2.0-85098682901