Gaano karaming temperatura ang kayang tiisin ng mga optical fiber

Are fiber optic cables afraid of high temperatures? Different types of optical fibers have an upper limit value. The working temperature of a standard fiber optic network cable is -40 º C to+75 º C.

If it is an industrial optical fiber, due to the different composition of each type of optical fiber, it can withstand different high and low temperatures. Please consult the manufacturer for specific information.

Fiber optic is affected by temperature

1. The temperature characteristics of optical fibers refer to the impact on fiber loss under high and low temperature conditions. Under low temperature conditions, the loss of optical fibers increases due to the different expansion coefficients of the fiber coating layer, plastic coating layer, and quartz. Ang mga thermal expansion coefficient ng mga organikong resin at plastik ay mas malaki kaysa sa quartz. Ang pag-urong ng mababang temperatura at pagpapahaba ng mataas na temperatura ay nagreresulta sa bahagyang baluktot ng hibla sa ilalim ng puwersang ito ng axial compression, na nagpapataas ng pagkawala. Kung nagtatrabaho sa mababang temperatura, habang patuloy na bumababa ang temperatura, tumataas ang pagkawala ng hibla. Kapag bumaba ang temperatura sa paligid -55 ℃, ang pagkawala ay tumataas nang husto, ginagawang hindi gumana ng normal ang system.

2. Ang bahagyang pagkawala ng baluktot na dulot ng mga pagbabago sa temperatura sa mga optical fiber ay dahil sa thermal expansion at contraction. Alam ng physics na ang thermal expansion coefficient ng silikon dioxide (SiO2), na bumubuo ng mga optical fibers, ay napakaliit at halos hindi lumiliit kapag bumababa ang temperatura. Sa panahon ng proseso ng pagbuo ng fiber optic cable, it must be coated and some other components must be added. The coefficient of expansion of the coating material and other components is relatively high. When the temperature decreases, the shrinkage is more severe. Samakatuwid, kapag nagbabago ang temperatura, the coefficient of expansion of the material is different, which will cause the fiber optic to produce slight bending, especially in the low-temperature region.

Fiber optic working temperature range

The upper and lower limits of the working environment temperature for fluorescent fiber optic mga sistema ng pagsukat ng temperatura are usually between -20 ℃ and+55 ℃
The measurement range of fiber optic temperature sensors is -40 ℃~20.0 ℃. Bilang karagdagan, higher temperature sensing temperature sensors can be customized.

Sa pangkalahatan, conventional high-temperature resistant optical fibers have a long-term temperature range of -20 ° to+300 °, na may maximum na 350 ° in the short term

The working environment temperature of the ipinamahagi ang fiber optic temperature measurement system is -10 ℃~50 ℃, and the conventional temperature measurement range is -40~120 ℃; High temperature optical cable: -40-400 ℃

The measurement temperature range of fiber optic grating temperature sensors is -40 ℃~300 ℃

Sensor ng temperatura ng fiber optic, Intelligent na sistema ng pagsubaybay, Ibinahagi ang tagagawa ng fiber optic sa China