产品介绍
DCM是北亿纤通科技有限公司推出的负色散光纤,是针对现已铺设的G.652& G.655标准单模光纤而设计的一种新型单模光纤；G.652标准光纤在1550nm附近波长的色散是正的（17－20）ps/（nm·km）,G.655标准光纤在1550nm波长的色散是正的（4－6）ps/（nm·km）,并且具有正的色散斜率;
因此需要在这些光纤中加接具有负色散的色散补偿光纤,进行色散补偿,以保证整条光纤线路的总色散近似为零,从而实现高速度、大容量、长距离的通信。
色散补偿原理
色散是光纤的传输特性之一,光脉冲信号在光纤中传输一段距离以后将出现时间上的展宽,产生码间干扰,从而增加误码率,影响通信质量。
● 数据速率越高,越容易产生码间串扰
● 传输距离越长,越容易产生码间串扰
产品规格
|
产品型号 |
DCM20A |
DCM40A |
DCM60A |
DCM80A |
DCM100A |
|
等效G.652补偿长度 |
20km |
40km |
60km |
80km |
100km |
|
1545nm波长色散 |
-340±20 (ps/nm) |
-670±30 (ps/nm) |
-1000±40 (ps/nm) |
-1340±50 (ps/nm) |
-1670±60 (ps/nm) |
|
1545nm波长相对色散斜率 |
0.004±20%(nm-1) |
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|
插入损耗 |
≤3.6 dB |
≤4.8 dB |
≤6.8 dB |
≤8.7 dB |
≤9.7 dB |
|
偏振模色散 |
≤0.6 ps |
≤0.9 ps |
≤1 ps |
≤1 ps |
≤1 ps |
|
标称单波输入光功率 |
≤0 dBm |
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|
光接口 |
所有接口均为LC型 |
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|
典型功耗 |
0W（无源器件） |
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|
MTBF |
＞20万小时 |
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|
占用槽位数量 |
2槽（40km以上色散补偿板需单独配置DCM无源机框） |
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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.
The publication of information in this data sheet does not imply freedom from patent or other protective rights of F-tone Networks or others. Further details are available from any F-tone Networks sales representative.
