Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate
2007-04-05
2008-09-02
Lauchman, L. G. (Department: 2877)
Optics: measuring and testing
For optical fiber or waveguide inspection
C385S015000
Reexamination Certificate
active
07420666
ABSTRACT:
In a method for performing OTDR measurement in an optical transmission system including a first terminal station and a second terminal station, OTDR signal light is transmitted from an OTDR provided in the first terminal station to the second terminal station, in which the OTDR signal light is Raman amplified by using main signal light of the optical transmission system as pump light.
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Funatsu Gentaro
Harasawa Shin-ichirou
Maeda Hideki
Maehara Takayuki
Naka Akira
Fujitsu Limited
Lauchman L. G.
Nippon Telegraph and Telephone Corporation
Slomski Rebecca C
Staas & Halsey , LLP
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