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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3274–3283

Annealing dynamics of waveguide Bragg gratings: evidence of femtosecond laser induced colour centres

P. Dekker, M. Ams, G. D. Marshall, D. J. Little, and M. J. Withford  »View Author Affiliations


Optics Express, Vol. 18, Issue 4, pp. 3274-3283 (2010)
http://dx.doi.org/10.1364/OE.18.003274


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Abstract

There is still significant speculation regarding the nature of femtosecond laser induced index change in bulk glasses with colour centre formation and densification the main candidates. In the work presented here, we fabricated waveguide Bragg gratings in doped and undoped phosphate glasses and use these as a diagnostic for monitoring subtle changes in the induced refractive index during photo- and thermal annealing experiments. Reductions in grating strengths during such experiments were attributed to the annihilation of colour centres.

© 2010 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(230.1480) Optical devices : Bragg reflectors
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Integrated Optics

History
Original Manuscript: December 4, 2009
Revised Manuscript: January 11, 2010
Manuscript Accepted: January 11, 2010
Published: February 1, 2010

Citation
P. Dekker, M. Ams, G. D. Marshall, D. J. Little, and M. J. Withford, "Annealing dynamics of waveguide Bragg gratings: evidence of femtosecond laser induced colour centres," Opt. Express 18, 3274-3283 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-4-3274


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References

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