光纤光栅是使用掺杂光纤的光致折射率转变特征,用特殊工艺使得光纤纤芯的折射率爆发永世性周期转变而形成的一种反射型光纤无源器件。当宽带光波通过光纤光栅时,对知足Bragg条件的入射光爆发强烈的反射,并沿原传输光纤返回,而其它波长的光波可以无消耗的通过。透射已往的其它波长光波可以继续传输给其它具有差别中心波长的光纤光栅阵列,其中响应中心波长的窄带光系列将被逐一反射,所有沿原传输光纤返回,由此可实现多个光纤光栅传感器的波分复用,实现准漫衍式丈量。被反射回来光波的中心发射波长值随光纤光栅所受情形温度和应力的转变而转变,并具有优异的线性关系,实现了温度信息的光波长绝对编码,而对光波信号的光强度转变不敏感,因此,接纳光纤光栅作为温度敏感元件可以获得较高的丈量精度,并具有优异的可靠性和稳固性;诖,基于光纤光栅传感手艺的温度实时监测系统在温度和应变丈量领域中倍受青睐。
参数:
参数 |
单位 |
数值 |
备注 |
中心波长 |
nm |
1510~1590 |
- |
波长误差 |
nm |
±0.2nm |
- |
反射率 |
% |
≥90% |
- |
边模抑制比 |
dB |
≥8dB(未切趾)≥15dB(切趾) |
- |
3dB带宽 |
nm |
≤0.25 |
- |
涂覆 |
|
Acrylate |
- |
栅区长度 |
mm |
10 |
- |
抗拉力 |
Kpsi |
≥100 |
- |
光纤类型 |
|
SMF-28e Or Polyimide Fiber |
- |
尾纤长度 |
m |
1m/1m |
- |
光栅点 |
|
1-18 |
- |
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.