Optical waveguides – Optical waveguide sensor – Including physical deformation or movement of waveguide
Reexamination Certificate
2005-04-05
2005-04-05
Ullah, Akm Enayet (Department: 2874)
Optical waveguides
Optical waveguide sensor
Including physical deformation or movement of waveguide
C385S012000, C385S037000, C250S227110, C250S227140, C250S227180, C250S227190, C356S032000, C356S073100, C356S340000
Reexamination Certificate
active
06876786
ABSTRACT:
An optical fiber sensor system comprising of an optical fiber including plurality of sensitive elements, each sensitive element has characteristic spectral band which in normal undisturbed condition lies in a first wavelength range and, under an influence of some specified condition to be detected, shifts to a second wavelength range; first and second wavelength ranges do not overlap. Means for probing an optical transmission or reflection of the fiber operate within second wavelength range to monitor the changes of the transparency or reflectivity of the fiber caused by the shift of characteristic spectral band into the second wavelength range.The invention provides means for distributed monitoring of equipment or construction structures and detection of specified conditions and can provide alarm signal when the specified conditions become effective.
REFERENCES:
patent: 4477725 (1984-10-01), Asawa
patent: 4727254 (1988-02-01), Wlodarchyk
patent: 4761073 (1988-08-01), Meltz
patent: 4806012 (1989-02-01), Meltz et al.
patent: 4891511 (1990-01-01), Reed
patent: 4976507 (1990-12-01), Udd
patent: 5046848 (1991-09-01), Udd
patent: 5272334 (1993-12-01), Sai
patent: 5355208 (1994-10-01), Crawford
patent: 5627637 (1997-05-01), Kapteyn
patent: 5633748 (1997-05-01), Perez et al.
patent: 5636021 (1997-06-01), Udd
patent: 5757487 (1998-05-01), Kersey
patent: 5760391 (1998-06-01), Narendran
patent: 5767956 (1998-06-01), Yoshida
patent: 5808779 (1998-09-01), Weis
patent: 5949533 (1999-09-01), Lee
patent: 6075907 (2000-06-01), Krol
patent: 6335524 (2002-01-01), Udd et al.
patent: 6489606 (2002-12-01), Kersey et al.
patent: 6542228 (2003-04-01), Hartog
patent: 6563969 (2003-05-01), Ames
patent: 6597822 (2003-07-01), Moslehi et al.
patent: 6816638 (2004-11-01), Bennion et al.
patent: 20020154860 (2002-10-01), Fernald et al.
patent: 20030035626 (2003-02-01), Smith
Abenchuchan Enrique Mitrani
Chliaguine Mikhail
Jimenez Francisco Javier Mendieta
Miridonov Serguei
Spirine Vassili
Cicese-Centro de Investigation
Grant Jonathan
Grant Patent Services
Petkovsek Daniel
Ullah Akm Enayet
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