The devices which are used to distribute light signal from one to many and from many to one optical fiber are called couplers. A few of the types of the couplers are:
1. Biconically Tapered Directional Couplers: In this type, the multimode fibers are made bare by removing the sheath and then these fibers are placed side by side and twisted together. Then the twisted portion of the fiber is heated gently and stretched. If the signal is passing through the first fiber then it will now start passing through the second fiber. Thus the coupler now becomes one input having two outputs.
2. Beam Splitting Couplers: Continue reading “Couplers in optical fibers”