Optical Multimeter

An optical multimeter is a handheld fiber‑optic test instrument that combines an optical power meter, light source, fiber inspection, loss/ORL measurement, and visual fault locator into one device, enabling fast certification and troubleshooting of fiber links.What an Optical Multimeter Is

• An integrated fiber‑optic testing tool combining multiple functions:
  • Optical power measurement
  • Insertion loss and optical return loss (ORL) testing
  • Visual fault location (VFL)
  • Fiber inspection
  • Light source output
• Designed for quick fiber link characterization, certification, and troubleshooting.

Key Capabilities

• Single‑ended testing of fiber link KPIs (length, loss, ORL, power) in seconds.
• Automated fault tracking to locate breaks, bends, bad connectors, or splices.
• Minimal setup—typically just connect the fiber and press a button.
• Integrated tools such as dual‑band light sources and power checkers.

Typical Applications

• FTTx installation and activation
• Last‑mile fiber verification
• In‑service testing
• Fiber health checks
• CATV and FTTH troubleshooting
• General optical network maintenance

Examples of Optical MultimetersVIAVI Optimeter

• Handheld, automated fiber certification
• Measures power, loss, ORL with one connection
• Intuitive touchscreen interface
• Fast fault identification

EXFO Optical Explorer

• Displays KPIs in under 3 seconds
• Built‑in power checker and light source
• No settings required
• Suitable for links up to 40 km

GAO Tek Fiber Optic Multimeters

• Wide range of models with integrated OPM, VFL, and light sources
• Suitable for FTTH, CATV, and general fiber testing
• Options include handheld meters, mini testers, and multifunction units

Industry Overview

Top manufacturers (2026):

1. Keysight Technologies
2. EXFO
3. Viavi Solutions

Optical multimeters remain essential tools for modern fiber‑optic deployment, enabling fast, reliable measurements and reducing troubleshooting time.