Optics: measuring and testing – By light interference – Using fiber or waveguide interferometer
Reexamination Certificate
2008-04-28
2010-10-12
Connolly, Patrick J (Department: 2877)
Optics: measuring and testing
By light interference
Using fiber or waveguide interferometer
C356S073100, C356S454000, C356S492000, C356S519000
Reexamination Certificate
active
07812962
ABSTRACT:
A device for performing polarization mode dispersion (PMD) measurements of an optical fiber is disclosed. The PMD measurement device employs a fixed analyzer method, and includes a tunable Fabry-Perot inferometer as the wavelength-selective element and an optical bandpass filter for spectrum calibration. A novel scanning algorithm, which performs multiple scans at different velocities, enables accurate PMD measurements, even of moving optical cable. The tunable Fabry-Perot interferometer is able to scan over a wide wavelength range and yet have a narrow linewidth, such that a wide range of PMD values can be measured.
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Connolly Patrick J
Luciol Instruments SA
Moetteli & Associes Sarl
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