光纖網(wǎng)絡(luò)傳感器

　　世界依賴于光纖鏈接：從電話聯(lián)系世界各地的互聯(lián)網(wǎng)骨干網(wǎng)，光纖布線進(jìn)行兆每天數(shù)以百萬計(jì)這是增加。根據(jù)德國(guó)的-海因里希赫茲研究所的數(shù)據(jù)，在所有經(jīng)濟(jì)衰退中，電信網(wǎng)絡(luò)的流量每年都會(huì)穩(wěn)定增長(zhǎng)。為了滿足這一需求，提高光纖網(wǎng)絡(luò)的容量，更好地利用光纖鏈路來支持現(xiàn)代服務(wù)和高分辨率視頻至關(guān)重要。

　　這些光纖的基本技術(shù)是LED發(fā)射機(jī)和二極管接收器。發(fā)光二極管在波長(zhǎng)為1300納米、820納米或650納米的波長(zhǎng)上傳輸數(shù)據(jù)，或者在單模光纖的單一頻率下獲得長(zhǎng)距離，或者與多模光纖一起用于具有較高帶寬的短鏈路。光孤子技術(shù)已經(jīng)能夠把一個(gè)光脈沖通過4000公里的光纖沒有放大的需要，而同樣的技術(shù)已經(jīng)被用于1 Tbit / s的數(shù)據(jù)速率。然而，這些還不是商業(yè)系統(tǒng)。

　　Increasingly， lower cost plastic fiber is being used with more cost-effective sensors providing the last mile connection for the telecom networks to the home. Developments in plastic fiber transmitter and receiver technology are boosting the data rates such that they will be proof against the increased data needs in the future.

　　While traditional telecom networks operate at standard data rates， most commonly up to 2.4 Gbit/s （or the optical carrier OC-48 standard in the US， and STM-16 in Europe）， now networking technologies are also running at similar speeds. The 10G Ethernet provides links at 10 Gbit/s， comparable to OC-192， while the developments in 40G Ethernet are mirrored by the development of the OC-768 （STM-256） protocol.