
Optical fibres Part 1-41: Measurement methods and test procedures - Bandwidth
出版:International Electrotechnical Committee

专家解读视频
Describes two methods for determining and measuring the modal bandwidth of multi-mode optical fibres (see IEC 60793-2-10, IEC 60793-2-30 and IEC 60793-2-40).The baseband frequency response is directly measured in the frequency domain by determining the fibre response to a sinusoidally modulated light source, it can also be measured by observing the broadening of a narrow pulse of light. Method A - Optical time domain measurement method (pulse distortion). Method 2 - Frequency domain measurement method. Each method can be performed using one of two launches: an overfilled launch (OFL) condition or a restricted mode launch (RML) condition.
VDE 0888-241:2004 - Identical
BS EN 60793-1-41:2003 - Identical
NEN EN IEC 60793-1-41:2004 - Identical
PN EN 60793-1-41:2005 - Identical
SS EN 60793-1-41 Ed. 2 (2004) - Identical
OVE/ONORM EN 60793-1-41:2004 - Identical
DIN EN 60793-1-41 (2004-06) - Identical
NF EN 60793-1-41:2004 - Identical
I.S. EN 60793-1-41:2003 - Identical