FOREWORD
1 Scope
2 Normative references
3 Terminology
4 Background on multimode launch conditions
5 Test source launch
5.1 General
5.2 Encircled flux
5.3 Encircled flux template illustration
5.4 Encircled flux target for attenuation
measurement
5.5 Limitations on multimode launch conditions
5.6 Encircled flux limits
BIBLIOGRAPHY