Agilent Technologies N7781B
N7781B is a compact high-speed polarization analyzer that provides comprehensive capabilities for analyzing polarization properties of optical signals. This includes representation of the state of polarization (SOP) on the Poincaré sphere (Stokes parameter). The on-board algorithms together with the on-board calibration data ensure highly accurate operation across a broad wavelength range.| Part No. | N7781B |
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| Datasheet | N7781B Download |
| Manufacturer |  Agilent Technologies |
| Description | Polarization Analyzer |
| Buy | Stock & Price |
APPLICATIONS
Ampl USB 4 ch. ADC DSP & Memory GPIB●
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● Monitoring / measurement of: - State of polarization (SOP) - Stokes parameter - Degree of polarization (DOP) High-speed analysis of SOP/DOP of signals in recirculating loop setups Analysis of PM-fiber extinction ratio Performance analysis of polarization scramblers Intrusion detection 0° Optical signal 45° 45° λ/4 0° Pol. Ampl Ampl Ampl Trigger in / out Figure 1. Agilent N7781B/BD polarization analyzer setup N7781B/BD instrument setup and application examples The instrument setup of the N7781B/BD polarization analyzer is shown in Figure 1. It consists of a unique polarimeter optics and a high-speed sampling subsystem. The measurement principle is based on splitting the light into four sub beams which are filtered through different polarization filters. The resulting four power levels are evaluated using on-board calibration data to obtain an accurate SOP- and DOP-measurement. Alignment of polarization maintaining fibers Accurate alignment of the polarization axis of polarization maintaining fibers is crucial for the performance of a large range of optical components.