The Blonder Tongue Fiber Optic Couplers (FOC) Series of optical couplers are used to split 1310 & 1550 nm light sources, with minimal loss. The couplers are 19 inch rack mountable and have FC/APC SC/APC connectors for superior reflection performance.
Blonder Tongue – FOC
![](https://www.goamt.com/wp-content/uploads/2015/08/Blonder_Tongue_FOC.jpg)