Peng C.-YQiu JHuang T.-YWu C.-HFeng MCHAO-HSIN WU2021-09-022021-09-02202007413106https://www.scopus.com/inward/record.uri?eid=2-s2.0-85077770185&doi=10.1109%2fLED.2019.2953508&partnerID=40&md5=cc2d954ff4b6239f1b1c7e8fd8b2708ehttps://scholars.lib.ntu.edu.tw/handle/123456789/580556A single-mode (SM) vertical-cavity surface-emitting laser (VCSEL) constructed using a multi-oxidation structure was demonstrated. With the help of an undoped bottom mirror for reduction of optical absorption, the SM-VCSEL possessed a threshold current of 0.6 mA. A pure single mode is observed at an operating current of 4 mA. For back-to-back transmission, the maximum bandwidth is 26.6 GHz, and the highest bit-rate is 48 Gb/s for on-off keying modulation. Under single-mode operation, 40 Gb/s error-free transmission up to 500 m in OM4 fiber was achieved in this work. ? 2019 IEEE.Errors; Laser pulses; Light absorption; Light transmission; Back to back transmission; Error free transmission; On-off keying modulations; Operating currents; Optical signal transmission; Single mode operation; Single mode VCSEL; Threshold currents; Surface emitting lasers[SDGs]SDG7journal article10.1109/LED.2019.29535082-s2.0-85077770185