Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate
2011-08-16
2011-08-16
Nguyen, Tu T (Department: 2886)
Optics: measuring and testing
For optical fiber or waveguide inspection
Reexamination Certificate
active
07999930
ABSTRACT:
A detection system comprising: (i) an optical fiber, the optical fiber having (a) a length L≧1 km; (b) beat length between 10 m and 100 m; and (c) beat length uniformity over any distance of at least 100 m within the length L is characterized by standard deviation σ, where |σ|≦10 m; (ii) an OTDR coupled to the fiber and including (a) a radiation source providing pulsed radiation to the fiber, (b) a detection system capable of detecting radiation that is backscattered back through the fiber; and (iii) at least one polarizer situated between the fiber and the detector, such that the backscattered radiation passes through the polarizer before reaching the detector.
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Chen Xin
Koh Joohyun
Li Ming-Jun
Nolan Daniel Aloysius
Corning Incorporated
Nguyen Tu T
Short Svetlana Z.
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