標題: 850 nm Vertical-Cavity Surface-Emitting Laser Arrays With Enhanced High-Speed Transmission Performance Over a Standard Multimode Fiber
作者: Yen, Jia-Liang
Chen, Xin-Nan
Chi, Kai-Lun
Chen, Jason
Shi, Jin-Wei
光電工程學系
Department of Photonics
關鍵字: Optical interconnects;semiconductor lasers;vertical cavity surface emitting lasers
公開日期: 1-八月-2017
摘要: The functionality of novel parallel and series highspeed vertical-cavity surface-emitting laser (VCSEL) arrays, which can greatly relax the tradeoff between output power and modulation speed, is demonstrated. Both types of array structure allow improvement in the output power with no degradation in their maximum modulation speed as compared to a single reference unit. The observed invariant electrical-optical bandwidth shown for these array structures is mainly due to the effective reduction of the differential resistance and parasitic capacitance, arising from the Zn-diffusion and oxide-relief apertures fabricated in the VCSEL unit. This in turn minimizes the degradation in the RC-limited bandwidth with the VCSEL arrays. Furthermore, the dense packing of single VCSELs, with Zn-diffusion apertures for optical mode control, minimizes the coupling loss between the output from the array into a standard multimode fiber (MMF). Compared with the single VCSEL unit, the parallel VCSEL array shows a significant enhancement in transmission performance over a standard OM4 MMF, which includes a larger eye margin, a higher signal-to-noise ratio, as well as a higher error-free data rate (48 versus 44 Gbit/sec). The device modeling technique is used to perform device analysis. From the results we can conclude that the improvement with the parallel array is because the value of the internal impedance is closer to the 50-Omega signal source, which minimizes the microwave reflection induced timing jitter in the eye-patterns.
URI: http://dx.doi.org/10.1109/JLT.2017.2679200
http://hdl.handle.net/11536/145773
ISSN: 0733-8724
DOI: 10.1109/JLT.2017.2679200
期刊: JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume: 35
起始頁: 3242
結束頁: 3249
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