![]() You can easily distinguish APC from UPC by their color. The return loss of the UPC connector is -40dB, which is higher than the PC but lower than APC.Ĭolor - According to industry standards, the typical APC connector color is green while UPC connector is blue. Return Loss - APC connector has the best return loss performance of -60dB. The 8-degree sloping surface allows a more accurate contact of two end face surfaces on two fibers, also efficiently reduces the back reflection by reflecting the light to the fiber cladding. Instead of flat, the end face APC connector is sloping, and the APC connector angle is 8-degree. The end face of the UPC connector is shaped as a flat-convex spherical without angle. APC vs UPCĮnd Face Structure - Similar to UPC and PC, the basic difference between APC vs UPC is also their end face structure. The minimum return loss of the UPC connector is -50dB while the PC connector is -40dB. ![]() Return Loss - The different structure and polish technology results in the different performance of the return loss. Polish Technology - UPC utilizes optimized extended polishing technology, getting a better fiber surface finish than PC. The PC connector features an almost flat surface, whereas UPC looks like a more dome-shaped convex spherical surface. Therefore, the UPC polish connector has a lower return loss of -50dB than the PC connector.Įnd Face Structure - The basic difference between UPC vs PC is the structure of the end face of fiber connectors. Furthermore, it uses an optimized publishing technology, resulting in a better fiber surface finish. The pronounced curve enables a more accurate contact of two fiber-end surfaces. UPC fiber connector evolved from the outdated PC connector, still using a convex spherical surface, but looking more like a dome shape since the radius of curvature is smaller than the PC connector. UPC connector is an upgraded version of PC. Since the PC connector has a relatively high return loss of -40dB at least, it had gone out of use and was replaced by optimized UPC and APC connectors. The almost flat end face structure isn't adequate to reduce the return loss. The fiber optic PC connector is the oldest one among the three connectors. The optical fiber core is located at the highest bending point, which effectively reduces the air gap within fiber components thus enabling physical contact of two fiber end faces. However, it looks flat since the radius of curvature is large. The fiber-end surface is polished similar to a convex spherical surface. PC connector stands for physical contact fiber connector, which allows the end faces of two fibers to be in direct contact with each other. The return loss of the fiber optic APC connector is typically -60dB, which is the smallest among the three types of UPC, APC and PC fiber connectors. The angle of the ferrule end face is the 8-degree angle, which is very helpful for the tight connection of fiber end faces.īecause of the sloping end face, the APC fiber connector allows the light to reflect to the fiber cladding instead of backward reflecting to the light source, thus significantly reducing the return loss of fiber. “APC” stands for Angled Physical Connect. What is an APC Connector?ĪPC connector is the most widely used fiber connector type today. The shapes of optical fiber end faces have mainly experienced three types of PC, APC, and UPC connectors. ![]() Therefore, the physical connections of fiber, also referred to as different polished fiber end face shapes, are essential to the performance of optical fibers. The insertion loss and return loss are exactly measuring the optical fibers’ performance. The accurate connection is mainly determined by the quality of the fiber physical connection, which matters the insertion loss and return loss of fiber. ![]() LC/UPC, SC/UPC, LC/APC, SC/APC, FC/APC, FC/UPC ConnectorĪPC, UPC, PC Fiber Connector Types Introductionīefore introducing APC, UPC and PC connectors, it should be aware that In order to maximum couple the fiber light output from the transmitting fiber to the receiving fiber, the two end faces of the optical fibers must be accurately connected. Next, the post will introduce the polish style, structure, difference, application, and usage attention of these connectors. Today, this post will introduce APC, UPC, and PC fiber connector types, which are classified based on the different angle polished fiber end face shapes. Previously, in accordance with the classification criteria of different structures of fiber connector types, we have introduced LC, SC, FC, ST, MTP, and MPO fiber connector types. You may have heard of SC UPC, LC UPC, SC APC, LC APC, FC APC, FC UPC? What do they mean? The LC, SC, and FC indicate the different structures of fiber connector types, whereas the UPC and APC indicate different polishing shapes of fiber connector end faces.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |