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產品描述
為了實現(xiàn)跨洋洲際海底光纖通信,在G.652單模光纖基礎上進一步研究出了截止波長位移單模光纖,G.654光纖折射率剖面結構形狀與G.652單模光纖基本相同。G.654光纖是通過采用純二氧化硅(SiO2)纖芯來降低光纖衰減,靠包層摻雜F使折射率下降而獲得所需要的折射率差。與G.652光纖相比,G.654光纖性能上的突出特點是:在1550nm工作波長,衰減系數(shù)極小,僅為0.15dB/km左右;通過截止波長位移方法,大大改善了光纖的彎曲附加損耗。ITU-T建議將截止波長位移單模光纖定義為G.654光纖。
應用環(huán)境
G.654光纖主要用于海纜通信系統(tǒng),為適應海纜通信長距離、大容量的需求。
產品特點
(1)降低光纖的損耗;從G.652的0.22dB/km降到了0.19dB/km(標準值)
(2)增大光纖的模場直徑;光纖的模場直徑越大,通過光纖橫截面的能量密度就越小,從而改善光纖的非線性***應,提升光纖通信系統(tǒng)的信噪比。
產品技術參數(shù)
特性 |
單位 |
G652 |
G653 |
G654 |
G655 |
|||
131Onm |
1550nm |
131Onm |
1550nm |
1550nm |
1550nm |
|||
衰 減 |
A級 |
dB/km |
≤O.35 |
≤0.22 |
≤0.40 |
≤0.22 |
≤0.19 |
≤0.22 |
B級 |
dB/km |
≤0.40 |
≤0.25 |
≤0.45 |
≤0.25 |
≤0.22 |
≤0.25 |
|
C級 |
dB/km |
≤0.45 |
≤0.30 |
≤0.55 |
≤0.35 |
|
≤0.30 |
|
色散特性 |
nm |
零色散波長范圍 為 1300-1324 |
零色散波長 ***大容差 △λomax≤50 |
|
非零色散區(qū) 1530≤λmin≤λmax≤1565 |
|||
ps/(nm2km ) ps/(nm.km ) |
零色散的***大值 為 0.093 |
零色散斜率***大值 Smax≤O.085 |
|
非零色散區(qū) 色散系數(shù)******值 0.1≤Dmin≤Dmax≤6.0 |
||||
1288?1339nm 色 散系數(shù)***大值為 3.5 |
|
|
|
|||||
1271 ?1360nm 色 散系數(shù)***大值為 5.3 |
|
|
|
|||||
1550nm色散系 數(shù)***大值為18 |
1525 ?1575nm 色散系數(shù)***大值 為 Dmax = 3.5 |
1550nm 色 散系數(shù)*** 大值為20 |
|
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模場直徑 |
μm |
(8.6~9.5)±0.7 1310nm |
(7.8~8.5)±0.7 1550nm |
(95~105)±0.7 1550nm |
(8.0-11.0)±0.7 1550nm |
|||
包層直徑 |
μm |
125±1 |
125±1 |
125±1 |
125+1 |
|||
芯/包層同 心偏差 |
μm |
≤0.8 |
≤0.8 |
≤0.8 |
≤0.8 |
|||
包層不圓度 |
% |
≤1.0 |
≤1.0 |
≤1.0 |
≤1.0 |
|||
截止波長λcc |
nm |
≤1260 |
≤1270 |
≤1530 |
≤1480 |
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注:本產品有全國產化型號可選
Important Notice
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change without notice.
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