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该论文提出了一种用于光互连的40Gb/s VCSEL过驱动集成电路，通过群延迟可调预加重技术提升高频响应，解决了传统电互连带宽瓶颈问题，实现了高速率串行数据传输。
high-performance computing systems and data centers are currently being developed. The transmission range of conventional electrical interconnections is limited due to the bandwidth of electrical channels. VCSEL-based optical interconnection technologies are a promising solution for overcoming bandwidth bottlenecks in large scale computing systems [1-3]. Although it is anticipated that the next challenge for optical interconnections is to move to a serial data-rate of 40Gb/s, there are few 40Gb/s class VCSELs at present. Overdriving is a method that boosts high-frequency response to overcome the VCSEL speed limit [4,5]. To develop high-density optical interconnections, a low-power over-driving IC is a key technology. In addition, the optical modulation amplitude
Yukito Tsunoda, Mariko Sugawara, Hideki Oku,
Satoshi Ide, Kazuhiro Tanaka Fujitsu Laboratories, Atsugi, Japan High-speed and high-density interconnections between racks and modules in the