Today, high-bandwidth premises networks rely on fiber-optic infrastructure. Proper installation and maintenance of fiber cabling are essential to ensure cabling system performance and reduce troubleshooting time. Whether you need basic fiber verification, advanced troubleshooting, loss/power measurement, or connector end-face inspection, different tools may be required. An optical power meter (OPM) is a common instrument for power and loss testing. When used with a light source, it provides an accurate and cost-effective test solution for fiber-optic networks. This article will help you understand optical power meters.
What is an Optical Power Meter?
An optical power meter (OPM) is a test instrument used to accurately measure the optical power emitted by fiber-optic equipment or transmitted through a fiber-optic cable. It also helps determine the optical power loss incurred as the signal passes through the fiber-optic medium. An OPM typically consists of a calibrated sensor, a measurement amplifier circuit, and a display. Optical power is expressed in dBm or mW; relative loss is expressed in dB. OPMs can be used with different connector types, such as SC, ST, and FC, via interchangeable adapters.
Types of OPM
There are two common types: standard OPM and PON OPM.
A standard OPM measures optical power in a fiber-optic link at calibrated wavelengths such as 850/1300/1310/1490/1550/1625 nm, depending on the model. Some models also support 980 nm for EDFA-related testing.
A PON OPM can measure optical power at wavelengths used for voice, data, and video services in PONs and supports EPON/GPON testing. It is ideal for PON network construction and maintenance. In addition, some PON OPMs can simultaneously measure all three wavelengths (1310/1490/1550 nm) in a PON; burst-mode capability may be required for upstream 1310 nm signals.
Features and Benefits
Sun Telecom ‘s OPM provides the following features and benefits:
· User self-calibration function
· Auto power off after 10 minutes without operation
· Standard FC/SC/ST interchangeable port
· Backlight LCD for night operation
· REF setting and intelligent backlight control function
· Auto wavelength and frequency identification
· High storage capacity, precision, stability, sensitivity, and durability
· USB communication port for data transfer
· Compact design, easy operation, and easy to use
Applications
OPM is used in telecommunication networks, CATV networks, FTTx networks, PON networks, LAN/WAN, education and research in optical communication, etc.
Conclusion
An OPM is used to measure optical power and, with a light source, optical attenuation; to help verify continuity; and to evaluate fiber-link transmission quality from a power/loss perspective. Depending on the model, it can provide high accuracy, a wide wavelength range, compact design, and ease of operation.
Sun Telecom specializes in providing one-stop total fiber optic solutions for all fiber optic application industries worldwide. Contact us if any needs.
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