National defense optical cables are military information transmission optical cables. It is a fiber optic cable line that utilizes communication, information transmission, and reception necessary for military needs such as military command and communication, and coordination among various departments.
National defense optical cables are different from civilian optical cables and are absolutely protected. If there is a prompt for the laying of national defense optical cables, absolute approval is required for nearby construction, and in most cases, it is prohibited. Once destruction, theft, or even theft of information occurs, it is even more heinous than destroying civilian facilities.
The importance of national defense optical cables
After the country has laid the national defense optical cable, a sign will be erected specifically to remind the people that there are national defense cables nearby and not to damage them casually. And the public also knows that damaging national defense optical cables will result in severe punishment, so the public will never approach national defense optical cables.
In order to guard against spies, China has also installed a large number of surveillance cameras in the location of defense optical cables. These cameras will work continuously 24 hours a day. Once someone damages the cable, the relevant servers will immediately mark the location of the abnormal signal to facilitate the military and police to lock in the location of the spy.

