Agilent 8156xA and 8157xA Variable Optical Attenuator modules Setting Attenuation and/or Power Levels
Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition 181
Agilent 8156xA and 8157xA
Variable Optical Attenuator
modules
The Agilent 8156xA/8157xA Variable Optical Attenuator family
includes six attenuator modules and four attenuator modules with
power control.
The 81560A and 81561A single-slot modules offer a small footprint
and high resolution.
The 81566A and 81567A dual-slot modules also incorporate a
powermeter so that you can set the output power level of the
attenuator directly. In addition, these modules feature power control
functionality. Figure 115 shows how a signal from a photo-diode after
a monitor coupler is used as an active feedback loop.
The 81570A, 81571A, and 81573A single-slot modules offer a small
footprint, high resolution and low insertion loss. They also offer high
power handling and a filter technology that is wavelength flat.
The 81576A and 81577A dual-slot modules also incorporate a
powermeter so that you can set the output power level of the
attenuator directly. In addition, these modules feature power control
functionality, high power handling and a filter technology that is
wavelength flat.
Figure 115 shows how a signal from a photo-diode after a monitor
coupler is used as an active feedback loop.
Table 10 The Agilent 8156xA/57xA Variable Optical Attenuator family
Module Description
81560A single slot, straight connectors
81561A single slot, angled connectors
81566A dual slot, power control, straight connectors
81567A dual slot, power control, angled connectors
81570A high power, single slot, straight connectors
81571A high power, single slot, angled connectors
81573A high power, single slot, SMF pigtail
81576A high power, dual slot, power control, straight connectors
81577A high power, dual slot, power control, angled connectors
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