Optics: measuring and testing – Material strain analysis – By light interference detector
Reexamination Certificate
2007-10-16
2007-10-16
Lee, Hwa (Andrew) (Department: 2886)
Optics: measuring and testing
Material strain analysis
By light interference detector
C356S477000, C356S484000
Reexamination Certificate
active
10874826
ABSTRACT:
A distributed fiber sensor based on spontaneous Brillouin scattering uses a single-frequency fiber laser as a source and a cw Brillouin fiber ring laser as an OLO to optically shift the frequency of the OLO to set the Brillouin/OLO beat frequency within the bandwidth of a conventional heterodyne receiver. The distributed fiber sensor is capable of real-time measurement of both temperature and strain.
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Geng Jihong
Jiang Shibin
Spiegelberg Christine
Gifford Eric A.
Lee Hwa (Andrew)
NP Photonics Inc.
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