Figure 7.
POF elongation sensor components and set-up. VCO: Voltage-controlled oscillator; T: Transmitter; R1: Receiver 1; R2: Receiver 2; P.C.: Phase comparator; DAQ: Data acquisition module.
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.