These polarization-maintaining fiber optic patch cables are terminated on both ends with narrow key, ceramic-ferrule FC/APC connectors. ast right-hand digit when considering the specification limits. This method is in accordance with the rounding method of ASTM Practice E29 (Standard Practice for using significant diITU-T (International Telecommunication Union) defines several single-mode fiber standards, including G. Among these, commonly used standards are G. Available from stock, these cables feature a high-quality polish, which leads to a typical return loss of 60 dB. Hybrid terminated connectors enable users to adapt FC/PC or FC/APC patchcords for compatibility with existing fiber assemblies. Two parallel Glass Fiber Reinforced Plastics (GFRP) are placed at the two sides.