Optics: measuring and testing – For optical fiber or waveguide inspection
Reexamination Certificate
2007-10-15
2010-10-05
Nguyen, Tu T (Department: 2886)
Optics: measuring and testing
For optical fiber or waveguide inspection
Reexamination Certificate
active
07808623
ABSTRACT:
In one embodiment, first optical signal can be generated at a first end of an optical fiber segment at a first time. The first optical signal can be detected at a second end of the optical fiber segment at a second time. A second optical signal can be generated at a second end of the optical fiber segment at a third time in response to the detection of the first optical signal. The second optical signal can be detected at the first end of the optical fiber segment at a fourth time. A length of the optical fiber segment can be determined based on a difference between the second time and the first time, a difference between the third time and the second time, and a difference between the fourth time and the third time.
REFERENCES:
patent: 5801818 (1998-09-01), Corrigan et al.
patent: 2007/0258721 (2007-11-01), Boduch et al.
Forghieri Fabrizio
Galimberti Gabriele Maria
Gerstel Ornan
Piciaccia Stefano
Brake Hughes Bellermann LLP
Cisco Technology Inc.
Nguyen Tu T
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