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The Keysight N7784B polarization controller contains a high-speed polarization controller plus microcontroller-based driving circuitry. It can operate in various modes.
As a polarization stabilizer, it provides a stable output state of polarization (SOP) even with fluctuations
and drifts of the input SOP as occurring for example through temperature drift and mechanical settling
processes.
As a synchronous scrambler, the device switches the SOP of the output signal in a random (pseudo) way.
As an SOP switch, the N7784B allows switching the internal waveplates to user definable angles with
very high speed and repeatability.
As traditional scrambler the N7784B varies the output SOP smoothly in a random/pseudo random way.
Specifications.
Wavelength.
Operating wavelength range: 1260 to 1640 nm.
Wavelength range in stabilizer mode: 1520 to 1580 nm.
Polarization control and stabilization.
SOP switching time (open-loop): < 10 μs.
PER at PMF output (typical): > 23 dB.
Stabilizer response time (typical): 2 ms.
Optical power.
Insertion loss port I to port II: < 3.5 dB (< 3.0 dB, typical).
Insertion loss port III to port IV: < 1.8 dB (< 1.4 dB, typical).
PDL port I to port II (typical): < 0.2 dB (C/L-Band), < 0.5 dB (O-Band).
Maximum safe input power: 20 dBm (Port I), 3 dBm (Port III).
Input power range in stabilizer mode Port III: -30 to 0 dBm.
Options.
N7784B-021 Straight contact connectors.
N7784B-022 Aangled contact connectors.
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