User`s guide

Definition of Terms Specifications
Agilent 81560A, 81561A, 81566A, & 81567A Optical Attenuator Modules, First Edition 33
Measurement: with EDFA to apply the necessary input power, TLS
and Optical Power Meter to test the wavelength dependence
Insertion Loss
Total loss at an attenuation setting of 0 dB.
Conditions: as specified, with reference connectors
Measurement: with Fabry-Pérot Laser Source.
Maximum Input Power
The maximum input power level that can be applied to the attenuator
without permanent change of its characteristics.
Operating Temperature
The range of ambient temperatures of the mainframe hosting the
attenuator module for which the temperatures apply.
Polarization Dependent Loss (PDL)
The dependence of the total loss on the input polarization state,
expressed as the difference (in dB) between the highest and the lowest
total loss (peak to peak).
Conditions: Fabry-Pérot type laser source with variable polarization
state and polarization-independent power, generation of all
polarization states (covering the entire Poincaré sphere), jumper
cables with reference connectors and applicable wavelength.
Measurement: either with fiber-loop type polarization scrambler using
polarization scanning method or waveplate-type polarization
controller using Mueller method.
Power setting (where applicable)
When changing the displayed power, the attenuation will be controlled
by the integrated power meter to set the output power to the displayed
power.
Reference Connector
Diamond® HMS-10 connector with perfect optical and mechanical
quality. Depending on the case, straight or angled.