45  Gb/s PAM4 transmission based on VCSEL with light injection and optoelectronic feedback techniques.
A 45 Gb/s four-level pulse amplitude modulation (PAM4) transmission based on an 850 nm/7.4 GHz vertical cavity surface emitting laser (VCSEL) with light injection and optoelectronic feedback techniques is proposed. Experimental results show that such an 850 nm/7.4 GHz VCSEL with light injection and optoelectronic feedback techniques is powerful enough for a 45 Gb/s PAM4 signal transmission. To the best of our knowledge, this Letter is the first to adopt a VCSEL transmitter with light injection and optoelectronic feedback techniques in a 45 Gb/s PAM4 transmission system. Good bit error rate performance and three independent clear eye diagrams are achieved over a 200-m OM4 multimode fiber transport. This proposed 45 Gb/s PAM4 VCSEL-based transmission system has great potential for providing effective bandwidth in short-reach optical data communications.
Hai-Han
HH
Lu
Chung-Yi
CY
Li
Hwan-Wei
HW
Chen
Zih-Yi
ZY
Yang
Xin-Yao
XY
Lin
Ming-Te
MT
Cheng
Chang-Kai
CK
Lu
Tien-Tsorng
TT
Shih