Q. What is the use of optical power meter?

Answer

The strength of an optical signal can be determined with the aid of a device called an optical power meter (OPM). In the context of fiber optics, it typically refers to a device used to measure effective average power. A suitable power meter will be able to measure light at the correct wavelength and across the required power range. It joins the cable's transmitter end to the source of optical radiation. To use the power meter, plug in its end to the test cable. Start the loss test by turning on the source and settling on a wavelength of interest. To conduct a loss test, turn on the meter, switch to the "dBm" or "dB" range, and choose the desired wavelength.