Polarized lightwave reflectometry method (POTDR)

Details Polarized lightwave reflectometry method (POTDR) Polarized lightwave reflectometry method (POTDR)

2006-10-24

2006-10-24

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

07126678

ABSTRACT:
A polarized lightwave reflectometry method including the steps of sending at least two polarized light signals into the optical fiber to be tested, the signals presenting a determined angular offset relative to each other so that the polarization mode dispersion coefficient remains independent of any rotation of polarization in the optical fiber under test; extracting a scalar parameter of the relative noise type for each trace obtained by back-scattering of the light signal; and estimating the polarization mode dispersion coefficient by a function having a single scalar input, which function is of the type based on exponentials and has the form exp (a+bP+cP−1).

REFERENCES:
patent: 19825876 (1999-12-01), None
patent: 0433020 (2001-06-01), None
A. Galtarossa et al, “Single-End Polarization Mode Dispersion Measurement Using Backreflected Spectra Through a Linear Polarizer”, Journal of Lightwave Technology, IEEE, NY, US vol. 17, No. 10, Oct. 1999 pp. 1835-1842, XP000984134.
A. Galtarossa, Polarization-Sensitive Relfectometric Techniques for PMD Measurements, XP-001035400, 25thEuropean Conference on Optical Communication (ECOC '99). Nice, France Sep. 27-30, 1999, Sep. 26, 1999.

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