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Visualizing the Limitations of Four-State Measurement of PDL and Results of a Six-State Alternative



Rex M. Craig


Author presents a method of visualizing polarization-dependent loss in single-mode optical fiber and components. This method uses generalized Poincarei spheroids wherein the power (though polarized) is no longer normalized to unity. The resulting graphical development permits a better understanding of the limitations of the four-state Mueller-Stokes measurement of this parameter in the presence of combined parasitic birefringence and external polarization-dependent losses. A six-state alternative that improves accuracy and repeatability is shown along with the results of preliminary comparison measurements. The alternative is also found to be more tolerant of non-orthogonal states while maintaining short measurement times.
Proceedings Title
Tech. Dig., Symp. on Optical Fiber Meas.
Conference Dates
September 23-25, 2002
Conference Location
Boulder, CO


four state, matrix, Mueller, Poincare, polarization, polarization dependent loss, single mode, six state, PDL


Craig, R. (2002), Visualizing the Limitations of Four-State Measurement of PDL and Results of a Six-State Alternative, Tech. Dig., Symp. on Optical Fiber Meas., Boulder, CO, [online], (Accessed May 17, 2024)


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Created September 1, 2002, Updated February 17, 2017