... Standard & Requirement 1Appearance / No crack, No scar, good conformability 2 Ferrule polished end / No scar, No spot 3Insertion loss dB SM ... change< 0.1,Return loss change< 5,No flab,No distortion 8 RepetitivenessdBInsertion loss change< 0.1Return loss change< ... 0.1,Return loss change< 5, No flab,No distortion12Package / Clean, Correctitude, No dirt13Allowable bending radiusmm ST SM Optical Fiber ...