光速率如何在光網絡中提供省電和帶寬

　　由于經常連接的互聯網設備、云計算以及視頻內容的增加，數據流量的驚人增長已經得到了充分的報道。服務器農場和數據中心的能源需求反映了這種增長。正在采取行動解決信息和通信技術部門的電力消耗問題。

　　。在許多應用中，光纖已經成為數據中心、企業和城域網以及電信運營商更高速度、更高帶寬數據網絡的首選媒介。眾所周知，光聯網也有助于降低能源需求。無源光網絡在信息通信技術領域越來越受歡迎，高增長率正在被預測。PONs不僅有效地提供了高速度和帶寬成本，而且他們還計劃大幅降低功耗。

　　本文將概述腦橋的趨勢的技術和商業優勢，認為此舉是對xgpon系統放置在光網絡組件廠商的挑戰。相關無源光器件包括無源光分路器、隔離器、環行器和過濾器，以及所有必要的收發器。在目前的技術手段看，如10 Gbps光收發器包括Avago，Finisar公司，將突出前進。

　　The need for speed

　　Despite the significant improvements in network data rates， bandwidth， and overall capacity， demand continues to increase in both telecom and datacom applications. The massive growth in data traffic is creating challenges for the carriers， and requiring dramatic expansion in capacity in enterprise networks and data centers. The adoption of optical components in today’s networks is accelerating， and such devices are enabling the move， expected to be rapid， towards 100 Gbps systems.

　　Fiber-optic technology has already proved useful even at 1 Gbps speeds， and has grown in use for 10 Gbps systems currently deployed at data centers and at the enterprise level. It is set to become the norm for the ongoing 40 Gbps upgrade path， and expected to peak this year. 100 Gbps systems are forecast to start ramping up from this year onwards. Optical fiber is proving practical for higher speeds over shorter distances up to 100 m. These are most in demand for applications including servers， routers， and switches in data centers. Fiber not only reduces the size and weight of cables， but is equal in cost， minimizes EMI， and reduces overall power consumption.