Figure 9.
Demodulated intrusion signals at the position of 150.37 km. (a) Along the fiber; (b) around the perturbed spot.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.