120 Gbps VCSEL arrays: fabrication and quality aspects
120 Gbps VCSEL arrays: fabrication and quality aspects
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120 Gbps VCSEL 阵列：制造和质量方面
DOI：
10.1117/12.841987
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
R. Jäger
中科院分区：
文献类型：
--
作者：
M. Grabherr;S. Intemann;C. Wimmer;L. Borowski;R. King;D. Wiedenmann;R. Jäger
数据中心和超级计算机正在推动对短距离聚合带宽的需求。例如，全球一些最大的服务器群大约一年前就开始安装总带宽为120 Gbps的主动CXP主动光缆（AOC）[1]。由于这些应用需要并行光学器件，显然这是VCSEL技术的天然游乐场。Philips乌尔姆Photonics的10G VCSEL平台通过用于单个VCSEL的低偏置电流（在室温下低至3.4 mA，在85°C环境下低至5.5 mA），使得这种AOC能够在小于3 W的总功率下操作。结合理想匹配的驱动器电子器件，VCSEL的发射功率可以在此工作温度范围内稳定在0.15dB的变化范围内[2]，从而允许开环功率控制。在现场工作超过108小时且未报告现场返回的情况下，可以计算出1x12 VCSEL阵列的FIT率小于10 FIT。
Data centers and supercomputers are driving the demand for short reach aggregate bandwidth. E.g. active CXP active optical cables (AOC) with an aggregate bandwidth of 120 Gbps [1] are being installed since about one year in some of the biggest server farms in the world. As these applications require parallel optics, obviously this is a natural playground for VCSEL technology. The 10G VCSEL platform of Philips ULM Photonics is enabling operation of such AOC at less than 3 W total power by low bias currents for the individual VCSEL as low as 3.4 mA at room temperature and 5.5 mA at 85°C ambient. In combination with ideally matched driver electronics, the launch power of the VCSELs can be stabilized within 0.15dB variation across this operating temperature range [2] and thus allow for open loop power control. With more than 108 hours of operation in the field and no field return reported, the FIT rate for the 1x12 VCSEL array can be calculated to be less than 10 FIT.