There are the following classifications according to the different fibers coupled.
SC fiber coupler applied to the SC fiber interface, it looks very similar to the RJ-45 interface, but the SC interface appears more flat, the obvious difference is still the contact piece inside, if it is 8 thin copper contacts, it is the RJ-45 interface, if it is a copper column is the SC fiber interface.
LC fiber coupler is applied to the LC fiber interface, connecting the SFP module connector, which is made of easy-to-operate modular jack (RJ) latching mechanism.
FC fiber coupler is applied to FC fiber interface, the external reinforcement is made by using metal sleeve and fastening by screw fastening. Generally used on the ODF side (the most used in the distribution frame)
ST fiber coupler is used for ST fiber interface, commonly used in fiber optic distribution frame, the shell is round, the fastening method is screw fastening.
Fiber coupler is a removable (active) connection between the fiber and the fiber device, it is the two ends of the fiber precision docking together, so that the light energy output from the transmitting fiber can be coupled to the receiving fiber to the maximum, and its intervention in the optical link and thus minimize the impact on the system.
For the waveguide fiber coupler, generally a Y-shaped branching components, the optical signal input by a fiber can be used to equalize it. When the opening angle of the coupler branch increases, the light leakage to the cladding will increase to increase the excess loss, so the opening angle is generally within 30 °, so the length of the waveguide fiber coupler can not be too short.
The main roles are to
Converting optical signals into electrical signals
Coupling multimode signals into single-mode signals
Make two fiber optic connectors cross-sectional fiber optic hole conductive
Make two groups of optical signals interconnected light
