OWL optical power meters take advantage of a flexible universal connector port system which allows multiple fiber optic connector styles to connect to the same port. Fiber optic connector ferrules come in two common sizes: 2.5mm (for ST, SC, FC, etc.) or 1.25mm (LC, MU, and other SFF connectors). A universal adapter cap is available for each ferrule size.
Universal Adapter Caps
What gives our universal port its flexibility is that only the ferrule is inserted into the port. Since there is no latching mechanism to speak of, most connectors can connect to this port as long as the ferrule size matches the adapter cap.
Technical Note: Universal Connector Ports
Each cap is designed so that once the ferrule is completely inserted, the cone of acceptance from a fiber connector falls completely onto the photo detector, regardless of how the connector may turn, twist, or wiggle in the port. Because of this, you can be assured that the optical power reading will always be accurate. By allowing connection to multiple connector types, OWL’s universal port method minimizes costs and maintenance requirements.