Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2006-01-31
2006-01-31
Kim, Ellen E. (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
Reexamination Certificate
active
06993221
ABSTRACT:
A novel method and apparatus for varying the index of refraction of a material using an interference pattern is disclosed. The method and apparatus incorporate an ultra short duration pulse laser source. Electromagnetic radiation provided from the laser propagates to a diffractive element positioned in close proximity to the target material. The diffracted electromagnetic radiation forms an interference pattern, the peaks of which are sufficiently intense to cause a change in index of refraction.
REFERENCES:
patent: 4807950 (1989-02-01), Glenn et al.
patent: 5104209 (1992-04-01), Hill et al.
patent: 5287427 (1994-02-01), Atkins et al.
patent: 5363239 (1994-11-01), Mizrahi et al.
patent: 5367588 (1994-11-01), Hill et al.
patent: 5400422 (1995-03-01), Askins et al.
patent: 5495548 (1996-02-01), Bilodeau et al.
patent: 5579427 (1996-11-01), Rusanov et al.
patent: 5620496 (1997-04-01), Erdogan et al.
patent: 5647039 (1997-07-01), Judkins et al.
patent: 5978538 (1999-11-01), Miura et al.
patent: 6050109 (2000-04-01), Kosinski et al.
patent: 6112553 (2000-09-01), Poignant et al.
patent: 6204926 (2001-03-01), Maznev et al.
patent: 6208787 (2001-03-01), Tam
patent: 6297894 (2001-10-01), Miller et al.
patent: 6347171 (2002-02-01), Tatah et al.
patent: 6404956 (2002-06-01), Brennan et al.
patent: 6456762 (2002-09-01), Nishiki et al.
patent: 6768850 (2004-07-01), Dugan et al.
patent: 6836592 (2004-12-01), Mead et al.
patent: 2002/0126333 (2002-09-01), Hosono et al.
patent: 2003/0035640 (2003-02-01), Dugan et al.
patent: 2 281 787 (1995-03-01), None
A Laurin Web site, The photonics Directory, definition of “Ultrashort-pulse laser”.
Davis et al., “Writing waveguides in glass with a femtosecond laser”, OPTICS LETTERS, Optical Society of America, vol. 21, No. 21, Nov. 1, 1996.
Fertein et al., “Refractive-index changes of standard telecommunication fiber through exposure to femtosecond laser pulses at 810 cm”, Applied Optics, vol. 40, No. 21, Jul. 20, 2001.
Kawamura et al., “Holographic encoding of fine-pitched micrograting structures in amorphous SiO2thin films on silicon by a single femtosecond laser pulse”, APPLIED PHYSICS LETTERS, American Institute of Physics, vol. 78, No. 8, Feb. 19, 2001.
Maznev et al., “How to make femtosecond pulses overlap” OPTICS LETTERS, Optical Society of America, vol. 23, No. 17, Sep. 1, 1998.
Dai Xiaoli
Ding Huimin
Grobnic Dan
Henderson George
Lu Ping
Freedman & Associates
Her Majesty the Queen in right of Canada as represented by the
Kim Ellen E.
LandOfFree
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