UNE-EN 61300-3-31:2004 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures -- Part 3-31: Examinations and measurements - Coupled power ratio measurement for fibre optic sources
2004UNE-EN 61300-3-31:2004 Fibre optic interconnecting devices and passive components - Basic test and measurement procedures -- Part 3-31: Examinations and measurements - Coupled power ratio measurement for fibre optic sources