标题: | Modal Linewidth Dependent Transmission Performance of 850-nm VCSELs With Encoding PAM-4 Over 100-m MMF |
作者: | Kao, Hsuan-Yun Chi, Yu-Chieh Peng, Chun-Yen Leong, Shan-Fong Chang, Chun-Kai Wu, Yun-Chen Shih, Tien-Tsorng Huang, Jian Jang Kuo, Hao-Chung Cheng, Wood-Hi Wu, Chao-Hsin Lin, Gong-Ru 光电工程学系 Department of Photonics |
关键字: | Data center;vertical cavity surface emitting laser (VCSEL);4-level pulse amplitude modulation (PAM-4) |
公开日期: | 1-十月-2017 |
摘要: | By changing the transverse-mode spectral linewidth of vertical cavity surface emitting lasers (VCSELs) at 850 nm, the directly encoded four-level pulse amplitude modulation data transmission performance over 100-m-long OM4 multimode fiber (MMF) are demonstrated and compared. The multi-mode VCSEL chip with the largest aperture of 11 mu m reveals the widest spectral linewidth and the highest optical power, but provides the smallest modulation bandwidth to support only 44-and 28-Gb/s data rates for back-to-back (BtB) and 100-m OM4 MMF transmission cases, respectively. By shrinking the aperture size to reduce transverse-mode number, the few-mode VCSEL with the strongest throughput power enables a BtB transmission capacity as high as 52 Gb/s. However, its modal dispersion induced after OM4 MMF transmission inevitably degrade the data rate to 32 Gb/s. In contrast, the single-mode VCSEL with the smallest aperture of 3 mu m reveals the highest modulation bandwidth and negligible modal dispersion to show competitive BtB transmission capacity with that of the few-mode VCSEL. In particular, the single-mode VCSEL successfully achieves a data rate of 34 Gb/s with a power penalty as low as 1.4 dB, after 100-m OM4 MMF transmission. |
URI: | http://dx.doi.org/10.1109/JQE.2017.2750414 http://hdl.handle.net/11536/146135 |
ISSN: | 0018-9197 |
DOI: | 10.1109/JQE.2017.2750414 |
期刊: | IEEE JOURNAL OF QUANTUM ELECTRONICS |
Volume: | 53 |
显示于类别: | Articles |