Today high bandwidth premise networks rely on fiber-optic infrastructure. Proper installation and maintenance of fiber cabling are imperative to improve technician productivity and ensure cabling system performance. Whether you require basic fiber verification capabilities, advanced troubleshooting, inspection, or loss and power measurements, an optical power meter (OPM) is the best first-line fiber instrument to meet your needs. It offers an accurate and cost-effective testing solution for the fiber optic network together with a light source. This article will help you understand optical power meters.