Optical waveguides – Optical waveguide sensor
Reexamination Certificate
2009-03-02
2009-08-11
Healy, Brian M (Department: 2883)
Optical waveguides
Optical waveguide sensor
C385S037000, C385S123000, C385S126000, C065S385000, C065S390000, C438S032000
Reexamination Certificate
active
07574075
ABSTRACT:
A method of fabrication of a thermally stabilized Type I fiber Bragg grating-based temperature sensing device includes doping a fiber core material with germanium or germanium oxide for enhancing photosensitivity, co-doping the fiber core material with fluorine or chorine or for increasing a mean coordination number; and ultraviolet laser inscribing a periodic or quasiperiodic modulated refractive index structure in the fiber core using a laser energy operating at less than 1000 milliJoules per square centimeter per pulse. The resulting sensor is operable for more than 1000 hours at temperatures up to at least 550 degrees Celsius.
REFERENCES:
patent: 5007705 (1991-04-01), Morey et al.
patent: 6112553 (2000-09-01), Poignant et al.
patent: 6298184 (2001-10-01), Putnam et al.
patent: 6647160 (2003-11-01), Chi et al.
patent: 7151872 (2006-12-01), Xia et al.
patent: 7499605 (2009-03-01), Xia et al.
patent: 2003/0002795 (2003-01-01), Fisher et al.
patent: 2009/0074347 (2009-03-01), Xia et al.
Xia Zhang, Jingxi Zhao, Yongqing Huang, Xiaomin Ren; “Analysis of Shift in Bragg wavelength of Fiber Bragg Gratings with Finite Cladding Radius”; Proceedings of ICCT2003; pp. 586-589.
Agosti Ann M.
General Electric Company
Healy Brian M
LandOfFree
Fiber Bragg grating and fabrication method does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fiber Bragg grating and fabrication method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiber Bragg grating and fabrication method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4065402