Agilent/Keysight N7781A High Speed Polarization Analyzer

The Agilent/Keysight N7781A is a high-performance Polarization Analyzer designed for comprehensive analysis of optical signal polarization properties. It offers real-time measurement capabilities with a sampling rate of 1 MSamples/s, making it suitable for analyzing fluctuating signals and for control applications requiring real-time polarization feedback. The instrument provides representation of the State of Polarization (SOP) on the Poincaré Sphere, calculates Stokes Parameters, and can determine Müller and Jones Matrices. It is engineered for high-accuracy operation across a broad wavelength range due to its on-board algorithms and calibration data. The N7781A can be integrated with a polarization controller and a tunable laser for high-speed PMD (Polarization Mode Dispersion) and PDL (Polarization Dependent Loss) measurements.

### Technical Specifications

* **Product Type:** Polarization Analyzer (Polarimeter)
* **Wavelength Range:** 850 nm – 1640 nm
* **Measurement Capabilities:**
* State of Polarization (SOP)
* Stokes Parameter
* Degree of Polarization (DOP)
* Müller Matrix determination
* Jones Matrix determination
* PMD/PDL measurements (when used with polarization controller and tunable laser)
* PM-Fiber Extinction Ratio analysis
* **Real-time Capability:** 1 MSamples/s sampling rate
* **Algorithms:** On-board algorithms for accurate operation
* **Calibration:** On-board calibration data
* **Outputs:** Analog data output ports, suitable for control loops in automated manufacturing test systems
* **Analysis Software:** Provided software for comprehensive analysis of measurement data

### Interfaces

* **Control:** LAN, USB, GPIB (for compatibility with existing equipment)
* **Data Output:** Analog data output ports

### Physical and Environmental

* **Dimensions:** 1U half-rack, 460 mm x 212 mm x 43 mm (excluding front and back rubber cushions and handle)
* **Weight:** Approximately 3 kg
* **Operating Temperature:** +5 °C to +40 °C
* **Storage Temperature:** -40 °C to +70 °C
* **Operating Humidity:** 15% to 95% RH, non-condensing
* **Altitude:** Up to 2000 meters
* **Power Consumption:** AC 100 to 240 V ± 10%, 50/60 Hz, 60 VA max
* **Rack Mountable:** Optional kit available for standard 19-inch rack cabinet

### Compatibility

* **Software:** Compatible with N77xx Windows-based graphical user interface
* **Connectors:** Typically uses the Keysight 81000xI connector interface system

### Legacy Status

* The Keysight N7781A is listed as an “Obsolete” product by Keysight.

Why Choose Aumictech for the Agilent/Keysight N7781A?
At Aumictech, we specialize in supplying high-end optical test and measurement equipment. Whether you need accurate polarization analysis for R&D, reliable performance data for system integration, or comprehensive characterization for enterprise procurement, our team ensures the Agilent/Keysight N7781A delivers maximum performance for your application.