摘要
隨著雲端運算和智慧型手機的興起，人類對有線、無線網路頻寬的須求也以驚人的速度在成長。也因為這樣，在資料中心（Data center）的網路匯流頻寬，和其建築物本身之規模，電功耗量也是不斷的增加。然而要連接如此龐大的資料量，使用傳統的電纜線連接在頻寬、距離、和電功耗量上，完全無法和使用光電元件和光纖的主動光纜線（Active optical cable; AOC）技術競爭。光連接技術的興起也顛覆了傳統光纖通信的概念。和傳統光纖通信的市場相比，主動光纜線將會更接近消費性電子市場，而且其對功耗的須求更為嚴格。超低功耗才能必免伺服器過熱並增加排線密度。我們也預期其將成為光通信市場自2000年泡沫化後，真正再起的最後希望。在最近的研究中，我們將結合新穎的光源／接收器技術，調變／解調變技術，電路技術，和透鏡被動封裝技術，以達成4x25 Gbit/sec的AOC其具有>0.5 km的傳輸距離。其主要的核心技術是利用面射型雷射的模態選擇技術，來大幅降低多模光纖（OM4）中的模態色散問題。在加上電路和調制技術的輔助，便能更進一步增加其中長距離傳輸下的邊限（margin），以期達成目標。
並列摘要
Due to the blooms in the market of cloud computing and smart phone, the demanding of wired and wireless bandwidth for communication tremendously increases. This truth thus strongly boosts up the total data flow rate in the data center, its scale of area, and the required DC electrical power consumption. Compared with using the traditional electrical cable to connect such huge amount of data flow rate, using the active optical cable (AOC) exhibits a wider bandwidth, a loner transmission distance, and is more power saving. In addition, compared with the market of traditional long-reach fiber communication, the demanding of AOC is more close to the consumer electronic market and it needs much lower power consumption to avoid the heating in server and increase the bus-line density. We can also expect that the scale of AOC market is much larger than that of the traditional fiber communication. In recent research, we will combine the novel technique of light source/receiver, modulation/de-modulation formats, high-speed circuits, and lens array for passive alignment packages to realize the goal of 4x25 Gbit/sec AOC with > 0.5 km maximum transmission distance. Our core technology is the mode-selection vertical-cavity surface-emitting laser (VCSEL), which can greatly minimize the modal dispersion in OM4 multi-mode fiber. With the aid of novel modulation format and high-speed circuits, we may further increase the transmission margin and realize the goal of such project.
延伸閱讀
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