Shortly afterward, it was determined that polishing the splints in a convex way produced a better connection. The convex splint guaranteed that the core fibers were in contact. The losses were less than 0.3dB and the reflectance of -40 dB or even better.
The definitive solution for single-mode systems extremely sensitive to reflections, such as cable television (CATV) or telecommunications networks with a high bit rate, was to make angles of 8 degrees at the end of the splint to create what which we call an APC connector or angled PC connector. Then, any reflected light is at an angle that is absorbed in the cladding of the fiber, resulting in reflectance of less than -60 dB.
fiber cable installer
Color code of the connectors:
From the beginning, the colors orange, black or gray were for multimode fiber and yellow for single-
mode fiber. However, with the arrival of metallic connectors such as FC and ST, the assignment of color codes would be difficult, which is why commonly colored protective boots are used on the fibers or on the cable to identify the connectors. Sometimes the color of the connector is unknown, so the user must identify the type of fiber by the cable.
According to the color code of the TIA 568 standard, the protective bodies and/or boots of the
connectors must be beige for the multimode fiber, with the exception of the laser-optimized fiber, for
which the turquoise color (aquamarine is used) ), blue for single-mode fibers and green for APC
connectors (angled).
Termination process
En general, multimode connectors are installed in the field after laying, while single-mode connectors are usually installed after the fiber splice in a cable connectorized fiber ( pigtail ) industrial manufacturing. Singlemode fiber terminations are less tolerant than multimode and polishing processes are more important, which is why it is better to make single-mode terminations in a factory using polishing machines (correctly). In the case of reduced speed data networks, single-mode connectors can be installed in the field, but no losses less than 1 dB are achieved and reflectance can be a problem.
The definitive solution for single-mode systems extremely sensitive to reflections, such as cable television (CATV) or telecommunications networks with a high bit rate, was to make angles of 8 degrees at the end of the splint to create what which we call an APC connector or angled PC connector. Then, any reflected light is at an angle that is absorbed in the cladding of the fiber, resulting in reflectance of less than -60 dB.
fiber cable installer
Color code of the connectors:
From the beginning, the colors orange, black or gray were for multimode fiber and yellow for single-
mode fiber. However, with the arrival of metallic connectors such as FC and ST, the assignment of color codes would be difficult, which is why commonly colored protective boots are used on the fibers or on the cable to identify the connectors. Sometimes the color of the connector is unknown, so the user must identify the type of fiber by the cable.
According to the color code of the TIA 568 standard, the protective bodies and/or boots of the
connectors must be beige for the multimode fiber, with the exception of the laser-optimized fiber, for
which the turquoise color (aquamarine is used) ), blue for single-mode fibers and green for APC
connectors (angled).
Termination process
En general, multimode connectors are installed in the field after laying, while single-mode connectors are usually installed after the fiber splice in a cable connectorized fiber ( pigtail ) industrial manufacturing. Singlemode fiber terminations are less tolerant than multimode and polishing processes are more important, which is why it is better to make single-mode terminations in a factory using polishing machines (correctly). In the case of reduced speed data networks, single-mode connectors can be installed in the field, but no losses less than 1 dB are achieved and reflectance can be a problem.
Comments
Post a Comment