The Branching Fiber-optic Patch Cord - Standard Design is optimized to equalize the power splitting into 2 branches. It consists of an optical connector (FC or SMA) at one end of a 20 mm long large core fiber that helps to make uniform the beam profile, before the launching into 2 fibers bundled inside the connector.
It allows a better control of the splitting ratio during the manufacturing process. The power transmission into each fiber which is typically between 16 and 20%, depends on the fiber type and the area recovery ratio. This approach uses a 30 mm long metal tube with a 6.35 mm diameter as the strain relief and are not suitable for short cables (less than 20 cm).
keyword : optogenetics, patch cord, doric