Optical power meter wavelength selected 1625 nm

Several optical power meters, including Anritsu CMA5, Ascentac OPM120, Fluke CertiFiber Pro, and Bismon OPM4/OPM5 series, support measurements at 1625 nm for single-mode and WDM fiber testing.Key Devices and Features1. Anritsu CMA5 Series The CMA5 power meters are handheld, rugged, and designed for both single-mode and multimode fiber testing. They support multiple wavelengths including 1310, 1490, 1550, and 1625 nm, making them suitable for WDM applications. Features include fast response, auto-zeroing, tone detection, and dual power options (9V battery or adapter), which enhance usability in field testing .2. Ascentac OPM120 Series This series offers a wide dynamic range (+6 to -70 dBm) and supports seven calibrated wavelengths: 850, 1300, 1310, 1490, 1550, 1625, and 1650 nm. It is ideal for both single-mode and multimode networks, providing relative measurements, low-power alarms, and the ability to analyze cable status .3. Fluke CertiFiber Pro With the Versiv platform, CertiFiber Pro can measure single-mode power at 1490 nm and 1625 nm, in addition to standard 1310 and 1550 nm. It allows monitoring of minimum and maximum power levels, comparison to reference values, and saving results for reporting. This meter is particularly useful for verifying optical network interface cards or external light sources .4. Bismon OPM4/OPM5 Series These meters use InGaAs or Ge detectors and support 1625 nm along with other common wavelengths (850, 980, 1300, 1310, 1490, 1550 nm). They feature automatic wavelength identification (Wave ID), which simplifies testing by detecting and setting the receive wavelength automatically. Applications include PON testing, LAN/WAN networks, and CATV systems .Considerations for 1625 nm TestingWDM Networks: 1625 nm is commonly used for monitoring and testing WDM systems without interfering with live traffic.Detector Type: InGaAs detectors are preferred for single-mode networks, while Ge detectors are suitable for multimode or LAN/WAN applications.Calibration: Ensure the meter is calibrated for 1625 nm to maintain measurement accuracy.Data Logging: Many meters allow saving measurements for reporting and analysis, which is useful for network documentation.By selecting a meter that supports 1625 nm, technicians can accurately measure optical power and loss in single-mode fibers, WDM systems, and FTTx networks, ensuring reliable network performance and maintenance.