Where Plastic Optical Fiber Has High Safety Requirements

Data transmission through plastic optical fiber is unlikely to be eavesdropped, so plastic optical fiber is very suitable for some occasions with high security requirements.

Although quartz optical fiber is widely used for long-distance trunk communication and fiber-to-the-home, plastic optical fiber is called "civilized" optical fiber because the total cost of plastic optical fiber, related connecting devices and installation is relatively low. In the overall solution of fiber to the home and fiber to the desktop, plastic optical fiber is a supplement to quartz optical fiber, which can jointly build an all-optical network.

Compared with silica fiber, POF has the following advantages: low modulus, large core diameter (0.3-1.0mm), simple POF connector can be used when splicing, even if the fiber splicing center alignment produces 30μm deviation, it will not affect Coupling loss; large numerical aperture (about NA0.5), the receiving angle can reach 60°, while the quartz fiber is only 16°, cheap LEDs can be used, and the coupling efficiency is high; good flexibility, easy to process and use; in the visible light region Has a low loss window; light weight; low cost and processing costs.

Compared with other transmission media in the LAN system, POF network also has obvious advantages: POF is not sensitive to electromagnetic interference, does not generate radiation, attenuation is constant at different data rates, the bit error rate is predictable, and it can work in electrical noise environments. It is used in medium; its size is longer, which can reduce the requirement of tolerance control in joint design, so the cost of net formation is lower.