Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate
2007-05-22
2007-05-22
Nguyen, Tu T. (Department: 2877)
Optics: measuring and testing
For optical fiber or waveguide inspection
Reexamination Certificate
active
11118302
ABSTRACT:
A method for measuring longitudinal variation in chromatic dispersion in an optical fiber, comprising: (i) launching into a first end and a second end of optical fiber an optical signal at a wavelength λ1to collect backscatter power P(z) for different positions z within said optical fiber and providing measured OTDR backscatter traces; (ii) deriving from the measured OTDR backscatter traces at the single OTDR wavelength λ1either (a) the longitudinal MFD(z) data or (b) the relative MFD data; and (iii) calculating estimated longitudinal dispersion D(z) from the longitudinal MFD(z) data or the relative MFD data, without utilizing any other wavelength data.
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Chen Xin
Laing Charles F.
Li Ming-Jun
Raney Sonya M.
Corning Incorporated
Nguyen Tu T.
Short Svetlana Z.
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