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N7784B Datasheet, PDF (1/4 Pages) Agilent(Hewlett-Packard) – High Speed Polarization Controller | |||
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Agilent N7784B
High Speed
Polarization Controller
Data Sheet
Figure 1. N7784B-001 bench-top mainframe
Introduction
The Agilent N7784B polarization controller contains a
high-speed polarization controller plus microcontroller-
based driving circuitry. This unit can operate in
various modes.
As a polarization stabilizer, it provides a stable output
state of polarization (SOP) even with ï¬uctuations and
drifts of the input SOP as occurring for example through
temperature drift and mechanical settling processes. The
stabilized output signal is guided in a polarization main-
taining ï¬ber (PMF). Alternatively, an external electrical
feedback signal can be provided for stabilizing the SOP.
As a synchronous scrambler, the device switches the
SOP of the output signal in a random (pseudo) way.
Switching of the SOP occurs within a few microseconds.
The SOP is stable for a predeï¬ned time until it again
switches to a new SOP. An electrical trigger input can be
used to synchronize the scrambler with external events.
As an SOP switch, the N7784B allows switching the
internal waveplates to user deï¬nable angles with very
high speed and repeatability.
As traditional scrambler the N7784B varies the output
SOP smoothly in a random/pseudo random way.
The unit does not contain any moving parts and there-
fore is robust and withstands even rough environmental
conditions. All above-mentioned applications of the
N7784B are supported by a PC software package.
â PC-based application software comes with
this instrument.
â Other instrument drivers for various software
interfaces are available.
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