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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 2 — Feb. 1, 2008
  • pp: 274–278

Localized waveguide formation in germanosilicate fiber transmitting femtosecond IR pulses

Haohua Tu, Yee Lin Koh, Daniel L. Marks, and Stephen A. Boppart  »View Author Affiliations


JOSA B, Vol. 25, Issue 2, pp. 274-278 (2008)
http://dx.doi.org/10.1364/JOSAB.25.000274


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Abstract

Transmission of intense femtosecond 825 nm pulses progressively produces a waveguide at the entrance of a heavily Ge-doped silicate fiber. The waveguide behaves as a multimillimeter long-fiber bandpass filter that scatters away light with wavelengths shorter or longer than 850 nm . This phenomenon has been correlated with the 800 nm photosensitivity producing type I-IR fiber Bragg gratings in side-written lightly Ge-doped silicate fibers and low-loss waveguides in pure silica bulk glass. A model incorporating color center formation is proposed to understand the underlying mechanism.

© 2008 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.2750) Materials : Glass and other amorphous materials
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 18, 2007
Revised Manuscript: December 2, 2007
Manuscript Accepted: December 4, 2007
Published: January 31, 2008

Citation
Haohua Tu, Yee Lin Koh, Daniel L. Marks, and Stephen A. Boppart, "Localized waveguide formation in germanosilicate fiber transmitting femtosecond IR pulses," J. Opt. Soc. Am. B 25, 274-278 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-2-274

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