Optical waveguides – Optical waveguide sensor
Patent
1997-02-21
1999-01-19
Ullah, Akm E.
Optical waveguides
Optical waveguide sensor
G02B 600
Patent
active
058622730
ABSTRACT:
Laser band-pass filter and/or band-reject filters are located at the end of an optical measurement probe by placing an appropriate Bragg grating proximate to the tip, and within, one or both of the optical fibers that make up the probehead. Thus, where an optical fiber is used to carry excitation energy of a nominal wavelength to a sample, the distal tip of this fiber will have included therein an optical filter to selectively pass energy of the nominal wavelength. Similarly, where an optical fiber is employed to carry stimulated emission from the sample to an analytical instrument such as a spectrometer, this fiber will have included within it at its distal tip an optical filter to selectively reject energy associated with the nominal wavelength. A disclosed system-level optical measurement probe would include a laser, a spectrometer, a first optical fiber to carry energy from the laser to a sample, including a Bragg grating laser bandpass filter at its tip, and a second optical fiber to carry energy collected from the sample to the spectrometer, including a Bragg grating laser band-reject filter at its tip.
REFERENCES:
patent: 4573761 (1986-03-01), McLachlan et al.
patent: 4807950 (1989-02-01), Glenn et al.
patent: 5216483 (1993-06-01), Berthold et al.
patent: 5283686 (1994-02-01), Huber
patent: 5367588 (1994-11-01), Hill et al.
patent: 5615008 (1997-03-01), Stachelek
patent: 5652810 (1997-07-01), Tipton et al.
patent: 5705821 (1998-01-01), Barton et al.
patent: 5710626 (1998-01-01), O'Rourke et al.
T. Strasser, T. Erdogan, A.White, V. Mizrahi, P. Lemaire, "Ultraviolet laser fabrication of strong, nearly polarization-independent Bragg reflectors in germanium-doped silica waveguides on silica substrates", App. Phys. Lett. 65(26), 26 Dec. 1994.
P. Niay, P. Bernage, S. Legoubin, M. Douay, W. Xie, J. Bayon, T. Georges, M. Monerie, B. Poumellec, "Behaviour of spectral transmissions of Bragg gratings written in germania-doped fibres: writing and erasing experiments using pulsed or cw uv exposure", Optics Communications 113 (1994) pp. 176-192.
W. Morey, G. Ball, G. Meltz, "Photoinduced Bragg Gratings in Optical Fibers", Optics & Photonics News, Feb. 1994, pp. 8-14.
L. Zhang, K. Sugden, J. Williams, I. Bennion, "Postfabrication exposure of gap-type bandpass filters in broadly chirped fiber gratings", Optics Letters, Sep. 15, 1995, vol. 20, No. 18, pp. 1927-1929.
P. Lemaire, R. Atkins, V. Mizrahi, W. Reed, "High Pressure H.sub.2 Loading as a Technique for Achieving Ultrahigh UV Photosensitivity and Thermal Sensitivity in GeO.sub.2 Doped Optical Fibers", Electronic Letters, 24 Jun. 1993, vol. 29, No. 13, pp. 1191-1193.
G. Meltz, W. Morey, W. Glenn, "Formation of Bragg gratings in optical fibres by a transverse holographic method", Optics Letters, Aug. 1, 1989, vol. 14, No. 15, pp. 823-825.
K. Tanaka, N. Toyosawa, H. Hisakuni, "Photoinduced Bragg gratings in As.sub.2 S.sub.3 optical fibers", Optics Letters, vol. 20, No. 19, Oct. 1, 1995, pp. 1976-1978.
L. Dong, J. Cruz, J. Tucknott, L. Reekie, D. Payne, "Strong photosensitive gratings in tin-doped phosphosilicate optical fibers", Optics Letters, vol. 20, No. 19, Oct. 1, 1995, pp. 1982-1984.
L. Dong, J. Archambault, E. Taylor, M. Roe, L. Reekie, P. Russell, "Photosensitivity in tantalum-doped silica optical fibers", J. Opt. Soc. Am. B, vol. 12, No. 9, Sep. 1995, pp. 1747-1750.
L. Dong, J. Archambault, L. Reekie, P. Russell, D. Payne, "Photoinduced absorption change in germanosilicate preforms: evidence for the color-center model of photosensitivity", Applied Optics, vol. 34, No. 18, 20 Jun. 1995, pp. 3436-3440.
M. Miller, R. Linton, S. Bush, J. Jorgenson, "Correlation of Retention Behavior with Quantitative Surface Analysis of Octadecyl Bonded Chromatographic Supports", Anal. Chem., 1984, 56, pp. 2204-2210.
C. Brooks, G. Vossler, K. Winick, "Integrated-optic dispersion compensator that uses chirped gratings", Optics Letters, vol. 20, No. 4, Feb. 15, 1995, pp. 368-370.
H. Hisakuni, K. Tanaka, "Optical Microfabrication of Chalcogenide Glasses", Science, vol. 270, 10 Nov. 1995, pp. 974-975.
R. Needham, M. Delaney, "Cadmium Telluride .gamma.-Ray Liquid Chromatography Detector for Radio-pharmaceuticals", Anal. Chem., 1983, 55, p. 148.
M. Leugers, R. McLachlan, "Remote analysis fiber optic Raman spectroscopy", SPIE, vol. 990, 1988, pp. 88-95.
{Author Unknown}, "Fiber Optic Probe for Remote Raman Spectrometry", Anal. Chem., 1983, 55, pp. 146-147.
S. Schwab, R. McCreery, "Versatile, Efficient Raman Sampling with Fiber Optics", Anal. Chem., 1984, 56, pp. 2199-2203.
Kaiser Optical Systems, Inc.
Ullah Akm E.
LandOfFree
Fiber optic probe with integral optical filtering 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 optic probe with integral optical filtering, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fiber optic probe with integral optical filtering will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1253350