Extinction Ratio Meter
The ERM100 is an extinction ratio meter based on the rotating polarizer technique. This benchtop device offers a fast and simple way to measure the ER of Polarization Maintaining (PM) fibers. It is an easy-to-use device that may be utilized in many applications where the alignment of PM fibers is required.
How It Works
The ERM100 is factory calibrated and can measure the ER, the misalignment angle, and the power. It can also be computer controlled via a USB connection. Drivers for LabVIEW™, LabWindows™/CVI™, MSVC, and Borland C are included.
The ERM100 is equipped with a FC/PC connector. For other connector types please contact our TechSupport.
Application: PM Alignment
The ERM100 Extinction Ratio Meter can be used to align the axis of a PM fibers. The incident light of a PM fiber has to be linear polarized and must be coupled parallel to one of the main axes of the fiber to maintain the linear polarization. The ERM100 provides a convenient way to achieve this. There are two different common setups for such fiber alignments depending on the light source.
Broadband Sources (SLED)
Narrow Band Sources (Laser Diodes)
ER Measurement on Narrow Band Sources
Software for the ERM100 Series Extinction Ratio Meters: