User`s guide

Getting Started with Return Loss The Return Loss Module
14 Agilent 81610A/11A/12A/13A/14A Return Loss Module, Fifth Edition
Agilent 81613A and Agilent 81614A
Return Loss modules
Agilent 81613A and Agilent 81614A Return Loss modules include a
power sensor, monitor diode, three couplers, and two internal laser
source in one module. They are for use in the Agilent 8163A Lightwave
Multimeter, the Agilent 8164A Lightwave Measurement System, and
the Agilent 8166A Lightwave Multichannel System for making return
loss measurements.
Figure 3 The Contents of the Agilent 81613A and Agilent 81614A Return Loss modules
All Agilent 8161x series Return Loss modules include a monitor diode
to compensate for power variation in the light source.
M
dut
P
dut
External Laser
Source
Output 9/125
µ
m
Internal Laser
Sources
physical contact