Скремблер поляризации N7785C

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The Keysight Technologies N7785C is a high-speed synchronous scrambler that can repeatably switch through a series of states of polarization (SOP) with both input and output triggering functions.

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Характеристики

Производитель

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Keysight Technologies

Модель

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N7785C

HIGHLIGHTS

Comprehensive polarization control and management capabilities
Wavelength options to cover entire CWDM wavelength range
<10 µs SOP cycling time
Robust, no moving optical parts

The Keysight Technologies N7785C is a high-speed synchronous scrambler that can repeatably switch through a series of states of polarization (SOP) with both input and output triggering functions. This unit can operate in various modes:

As a synchronous scrambler, the device switches the SOP of the output signal in a (pseudo) random but repeatable pattern. Switching of the SOP occurs within a few microseconds. The SOP is stable for a predefined 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 N7785C allows switching the internal waveplates to user definable angles with very high speed and repeatability.
As a traditional scrambler, the Keysight N7785C varies the output SOP smoothly in a random walk pattern.
As a polarization stabilizer, the Keysight N7785C uses feedback via program commands to set and stabilize the SOP base on an external reference.

Programming uses a new SCPI command set and the instrument is addressed as a VISA resource. The instrument comes in a compact form factor of just one rack height unit, with LAN and USB interfaces.

Документы

Скрэмблер поляризации N7785C

712,6 Кб

Operating wavelength range		1240 nm to 1650 nm (Option 001) 1480 nm to 1620 nm (Option 002)
SOP cycling time (τ90 1)		< 10 μs
Specification wavelength ranges	1270 – 1375 nm (Option 001)	1375 – 1460 nm (Option 001)	1490 – 1620 nm
Sensitivity of output power to polarization scrambling, peak to peak, typical 2	< 1.0 dB	< 1.0 dB	< 0.4 dB (< 0.18 dB at 1550 nm)
Insertion loss including reference connectors	Typical < 4.5 dB	Typical < 4.0 dB	< 4.0 dB (< 3.75 dB at 1550 nm) Typical < 3.5 dB (< 3.25 dB at 1550 nm)
Maximum safe input power		+20 dBm

1. Sequence with Stokes vector angles 0° – 90° – 180° – 90° – 0° with 50 kHz. Power range ≥ –10 dBm.
2. At constant input power and input state of polarization (SOP). Including output reference connector.

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