光速率如何在光網(wǎng)絡(luò)中提供省電和帶寬

　　由于經(jīng)常連接的互聯(lián)網(wǎng)設(shè)備、云計(jì)算以及視頻內(nèi)容的增加，數(shù)據(jù)流量的驚人增長(zhǎng)已經(jīng)得到了充分的報(bào)道。服務(wù)器農(nóng)場(chǎng)和數(shù)據(jù)中心的能源需求反映了這種增長(zhǎng)。正在采取行動(dòng)解決信息和通信技術(shù)部門的電力消耗問(wèn)題。

　　。在許多應(yīng)用中，光纖已經(jīng)成為數(shù)據(jù)中心、企業(yè)和城域網(wǎng)以及電信運(yùn)營(yíng)商更高速度、更高帶寬數(shù)據(jù)網(wǎng)絡(luò)的首選媒介。眾所周知，光聯(lián)網(wǎng)也有助于降低能源需求。無(wú)源光網(wǎng)絡(luò)在信息通信技術(shù)領(lǐng)域越來(lái)越受歡迎，高增長(zhǎng)率正在被預(yù)測(cè)。PONs不僅有效地提供了高速度和帶寬成本，而且他們還計(jì)劃大幅降低功耗。

　　本文將概述腦橋的趨勢(shì)的技術(shù)和商業(yè)優(yōu)勢(shì)，認(rèn)為此舉是對(duì)xgpon系統(tǒng)放置在光網(wǎng)絡(luò)組件廠商的挑戰(zhàn)。相關(guān)無(wú)源光器件包括無(wú)源光分路器、隔離器、環(huán)行器和過(guò)濾器，以及所有必要的收發(fā)器。在目前的技術(shù)手段看，如10 Gbps光收發(fā)器包括Avago，F(xiàn)inisar公司，將突出前進(jìn)。

　　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.