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 10kS/s Broadband Polarization Analyzer

     
The Polarflash PF-9 universal polarimeter is an industry breakthrough in performance and price. It provides ten thousand polarization samples per second at the same cost as slow sequential polarimeters or at a fraction of parallel narrow-band polarimeters. It offers:
  • Full Polarization State determination of partially polarized light: degree of polarization, Stokes parameters, elliptical parameters
  • <0.001 ms measurement time and 10,000 polarization states per second
  • 900 to 1800 nm coverage
  • Real-time graphical display on Poincare sphere, elliptical projection, and time scan (scope mode)
  • External trigger for transient measurements
  • Fiber-optic and open beam input
  • Simple USB cable connection to any PC
  • Continuous logging and export to popular databases
     
The Polarflash instrument uses four simultaneous channels to acquire the four Stokes parameters and measure any arbitrary polarization. The four channels are sampled with track and hold circuitry with less than 1 microsecond acquisition time. As a result, it performs measurements one thousand times faster than single-channel polarimeters that mechanically rotate a filter or waveplate.

The "circular-polarization" channel uses a wavelength independent internal-reflection retarder instead of a birefringent plate, providing broad wavelength coverage in the same detection head. It is a cost effective option for labs working at many wavelengths. A user-friendly interface allows the user to calibrate the instrument at his specific working wavelength.

It is the first instrument that allows polarization noise measurements without aliasing artifacts, polarization modulation studies, or transient and periodic data acquisition with external trigger synchronization.

 

 
Polarflash provides a complete set of real-time numerical and graphical displays. It plots the normalized state vector on a Poincare sphere that the user interactively rotates and makes solid or transparent. The user can also select the persistence of the trace and its width.

A simultaneous plot shows that State of Polarization (SOP) as the vectorial ellipse and the numerical value of its azimuth and ellipticity (selectable as a ratio or in degrees). The degree of total polarization (DOP), linear polarization (DLP), and circular polarization (DOC), as well as the Stokes parameters are displayed numerically and as bar-graphs.

Polarflash can also display the coherence matrix and extinction ratios. Oscilloscope-type and chart-type graphs display the stokes and elliptical parameters vs. time up to the full speed of the polarimeter. 

 

Polarflash connects to any laptop or desktop computer running Windows 98 with a standard USB port, using a cable up to 5 meters (15 ft.) long. There is no need to open the computer to install any cards. Data logging is automatically performed and can be exported to popular programs such as Microsoft Excel. 

 

     
 Some examples of possible applications of Polarflash PF9 are:
  • Coupling into polarization maintaining (PM) optical fibers
  • Birefringent axes and retardance determination
  • Fiber-optic sensors
  • PDL (polarization dependent loss) and PMD measurements
  • Interferometry setup
  • Depolarization evaluation
  • Liquid crystal display (LCD) development

 

 Specifications subject to change without notice