
2-22
General Information
Theory of Operation
Figure 2-11. Source block diagram
Agilent 83410C, 83411C/D, and 83412B receivers
The lightwave receivers consist of an optical input connector and fiber, launch
objects, a PIN diode detector, a thin-film hybrid amplifier, and one DC circuit
board. The receiver’s input is a keyed HMS 10 connector with a graded index
fiber (9
µ
m for the Agilent 83411C/D receivers, 62.5
µ
m for the
Agilent 83410C and 83412B receivers) that is terminated into a graded index
lens. The design provides good environmental sealing and allows a low loss
and low reflection signal coupling to the diode.
The PIN diode has high linearity, wide bandwidth, and low dark current.
Notice that it is directly coupled into the first amplifier stage. This physically
small low impedance connection limits the effect of standing waves and diode
capacitance on the frequency response of the receiver. Three AC (capacitor)
coupled 50 ohm amplifiers follow the first amplifier stage.
Summary of Contents for 83400 Series
Page 2: ...Agilent 83400 Series Lightwave Source and Receiver Modules User s Guide ...
Page 6: ...v Laser Classification IEC and FDA labels and their placement on an Agilent 83402C ...
Page 9: ......
Page 11: ......
Page 17: ...1 6 Getting Started Connecting a Source Figure 1 2 Location of laser safety labels ...
Page 81: ...Index 4 Index width spectral procedure 4 4 Y YAG system dual hetrodyne 4 7 ...