Optical Fiber Patch Cord Grinding Method

"/" indicates the cross-section process of the optical fiber connector, that is, the grinding method.

"PC" is most widely used in telecom operators' equipment, and its connector section is flat.

"SC" indicates that the pigtail connector model is SC connector. The optical interface on the side of transmission equipment in the industry generally uses the SC connector. The SC connector is made of engineering plastic, which has the advantages of high temperature resistance and is not easy to be oxidized; the optical interface on the ODF side generally uses the FC connector. It is a metal connector, but ODF will not have high temperature problems. At the same time, the number of pluggable and unpluggable metal connectors is more than that of plastic, and the maintenance of ODF pigtails is more than that of optical board pigtails. Other common connector types are: ST, DIN, FDDI.

"PC" represents the fiber optic connector cross-section process, and PC is the most common. The APC model is widely used in radio and television and early CATV. The pigtail head adopts an end face with an inclination angle (8 degrees), and the inclination is generally invisible, which can improve the quality of the TV signal. The main reason is that the TV signal is an analog light modulation. When the coupling surface of the connector is vertical, the reflected light is Return to the original path. Due to the uneven distribution of the refractive index of the fiber, it will return to the coupling surface again. Although the energy is very small at this time, the noise cannot be completely eliminated by the analog signal, so it is equivalent to superimposing a weak signal with time delay on the original clear signal. The performance on the screen is ghosting. The inclination of the pigtail headband prevents the reflected light from returning along the original path. General Digital signals generally do not have this problem.

There is also a "UPC" process, which has a smaller attenuation than PC. Generally, the flanges of equipment with special needs are generally FC/UPC. Foreign manufacturers' ODF racks use FC/UPC to improve the index of the ODF equipment itself.