System and method for permanently writing a diffraction...

Details System and method for permanently writing a diffraction... System and method for permanently writing a diffraction...

2007-09-28

2011-12-13

Stahl, Mike (Department: 2874)

Optical waveguides

With optical coupler

Input/output coupler

Reexamination Certificate

active

08078023

ABSTRACT:
A system and method for permanently writing diffraction gratings in low phonon energy glass waveguides are shown. Ultrashort light pulses are generated and made to form two beams synchronously superimposed in the waveguide, therefore forming an interference pattern corresponding to the desired grating. The light pulses are focussed so that the light intensity in the waveguide exceeds a filamentation threshold. The exposure of the waveguide to these light pulses is controlled temporally and spatially in order to limit detrimental thermal effects induced by the high-intensity pulses in the glass medium of the waveguide.

REFERENCES:
patent: 4783787 (1988-11-01), Doi et al.
patent: 4807950 (1989-02-01), Glenn et al.
patent: 5367588 (1994-11-01), Hill et al.
patent: 5400422 (1995-03-01), Askins et al.
patent: 5822479 (1998-10-01), Napier et al.
patent: 5912999 (1999-06-01), Brennan, III et al.
patent: 5978538 (1999-11-01), Miura et al.
patent: 6195483 (2001-02-01), Moon et al.
patent: 6204926 (2001-03-01), Maznev et al.
patent: 6297894 (2001-10-01), Miller et al.
patent: 6347171 (2002-02-01), Tatah et al.
patent: 6552301 (2003-04-01), Herman et al.
patent: 6633419 (2003-10-01), Hosono et al.
patent: 6636665 (2003-10-01), Sceats et al.
patent: 6993221 (2006-01-01), Mihailov et al.
patent: 7031571 (2006-04-01), Mihailov et al.
patent: 2002/0126333 (2002-09-01), Hosono et al.
patent: 2003/0035623 (2003-02-01), Wilcox et al.
patent: 2005/0201682 (2005-09-01), Hosono et al.
patent: 2006/0127024 (2006-06-01), Smith et al.
C. Meneghini et al. As2S3 photosensitivity by two-photon absorption: holographic gratings and self-written channel waveguides. J. Opt. Soc. Am. B, 15:12:2946-2950, Dec. 1998.
J. Lucas. Infrared glasses. Current Opinion in Solid State & Materials Science, 4:181-187, Apr. 1999.
M. Zeller, T. Lasser, H.G. Limberger, and G. Maze “UV-Induced Index Changes in Undoped Fluoride Glass” Journal of Lightwave Technology, vol. 23, No. 2, Feb. 2005, pp. 624-627.
Glen M. Williams, Tsung-Ein, Tsai, Celia I. Merzbacher, and E. Joseph Friebele “Photosensitivity of Rare-Earth-Doped ZLAN Fluoride Glasses” Journal of Lightwave Technology, vol. 15, No. 8, Aug. 1997, pp. 1357-1362.
R. Sramek, F. Smektala, W.X. Xie, M. Douay, and P. Niay “Photoinduced surface expansion of fluorizirconate glasses” Journal of Non-Crystalline Solids 277, 2000, pp. 39-44.
K.M. Davis, K. Miura, N. Sugimoto, and K. Hirao “Writing waveguides in glass with a femtosecond laser” Optics Letters, vol. 21, No. 21, Nov. 1, 1996, pp. 1729-1731.
H. Hisakuni and K. Tanaka “Optical fabrication of microlenses in chalcogenide glasses” Optics Letters, vol. 20, No. 9, May 1, 1995, pp. 958-960.
T. Taunay, P. Niay, P. Bernage, and E. X. Xie “Ultraviolet-induced permanent Bragg gratings in cerium-doped ZBLAN glasses or optical fibers” Optics Letters, vol. 19, No. 17, Sep. 1, 1994, pp. 1269-1271.
Grobnic et al., “Bragg Gratings Written in Un-doped Fluoride Glass Fibres Using Ultrafast 800nm Radiation,” Proceedings of European Conference on Optical Communications, ECOC 2006, Cannes, France, Sep. 24-28, 2006, art. No. 4801003 (Th3.3.7).
Mihailov et al., “Bragg Gratings Written in All-SiO2 and Ge-Doped Core Fibers With 800-nm Femtosecond Radiation and a Phase Mask,” J. Lightwave Tech, vol. 22, No. I, pp. 94-100, 2004.
Grobnic et al., “Fiber Bragg Gratings With Suppressed Cladding Modes Made in SMF-28 With a Femtosecond IR Laser and a Phase Mask,” IEEE Photon. Tech. Lett., vol. 16, No. 8, pp. 1864-1866, 2004.
Smelser et al., “Formation of Type I-IR and Type II-IR gratings with an ultrafast IR laser and a phase mask,” Opt. Exp., vol. 13, No. 14, pp. 5377-5386, 2005.
Zoubir et al., “Femtosecond Fabrication of Waveguides and Gratings in Chalcogenide Thin Films,” Conference on Lasers and Electro-Optics (CLEO 2002), Technical Digest Post Conference Edition, Long Beach CA, May 19-24, 2002.

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