How do optical fiber adapters (called flanges, some called fibre-optic couplers) are identified?
These are standard parts, formal manufacturers of quality should be no problem, now the price should be more transparent, requires attention on the quality difference is too big
If two fibre-optic lines are aligned in a straight line, the insertion loss is minimized. But in practical engineering application, it is unlikely to complete the task, because of the fiber core and the optical fiber cladding, optical fiber cladding with different core pin hole of different heart and pin hole and the outer diameter of the concentricity error factors such as the existence of, can cause transverse deviation between the optical fiber. Choosing fiber optic adapter flange (optical fiber), the product of should avoid the following problems: 1. The fiber core (or module) size mismatch 2. Numerical aperture mismatch 3. 4. The distribution of refractive index mismatch end clearance big 5. Six axis Angle. The Fresnel reflection of practical application, the influence is impossible to completely eliminate, but if the choose and buy high quality adapter, can greatly reduce the loss of the resulting. Optical fiber adapter is actually one of the most vulnerable link in the entire optical network, so its use not careless. Adapter can ensure docking two optical fiber core contact into a straight line is the key of the measuring its quality, depends on the manufacturing precision of adapter pin, as well as the adapter assembly processing precision.
The function of the fiber optic adapter flange (light) is to realize the optical fiber and optical fiber connection between activity. Things may be small, if the quality is bad, do not underestimate the influence on the whole network system. Basically a good fiber flange requirements are: low insertion loss, high reflection loss and good repetition of plug, environmental stability and mechanical performance is good. Generally speaking, the first insertion loss is not big, adapter insertion loss refers to access to the adapter to the system caused by light power attenuation. It is mainly caused by the difference between the two fibre-optic cables
