POF in Harsh Environments
Harsh environment properties
Plastic optical fiber lends itself to use in harsh environments due to the materials used, and can be broken down into four main properties:
PMMA resin has been proven to withstand temperature fluctuations, direct sunlight, and humidity. However, the core of the fiber should not be exposed to UV radiation for long periods of time, since it is prone to chemical changes that result in yellowing of the otherwise transparent material.
Heat resistance of plastic optical fiber is mainly dependent on the heat resistance of the plastics used. The following table gives an overview of the maximum usable temperatures of the different grades of POF.
|Type||Maximum Usable Temperature|
|Multi-Core||60°C, 85°C, 105°C, depending on grade|
Plastic optical fiber has excellent flexural strength compared to copper wires or glass fiber. However, significant transmission loss can occur when fiber is bent beyond the maximum bending radii for the grade of fiber used. For applications that require wires to withstand extreme bending cycles and radii, we recommend using multi-core POF, which is more tolerant to flexing.
Different types of plastic optical fiber and jacketing are chosen to withstand exposure to chemicals, such as adhesives used in connectors. When choosing a brand or grade of POF, consider the types of epoxy that may be used to build cable assemblies against the manufacturer’s datasheets.
Harsh environment products
FiberFin carries connectors and cable suited specifically for harsh environments that are IP-67 rated for full protection against dust and resistance to immersion in water.
Dual-jacketed duplex POF cable for harsh environments. Part FF-L84D02000S333.
Harsh environment housing for LC connectors, with IP-67 certification. Part FF-LC-IP67-HS-5.6 W/CP.
5 Meter, LC Duplex, IP-67 Harsh environment cable assembly with dust cap. Part FF-XLTLCIPDB005M.