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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 23 — Dec. 1, 2006
  • pp: 3495–3497

Femtosecond laser direct writing of multiwavelength Bragg grating waveguides in glass

Haibin Zhang, Shane M. Eaton, Jianzhao Li, and Peter R. Herman  »View Author Affiliations

Optics Letters, Vol. 31, Issue 23, pp. 3495-3497 (2006)

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Novel Bragg grating waveguide structures have been fabricated in bulk borosilicate glass through a type II photosensitivity mechanism driven by single femtosecond laser pulses. Low-loss single-mode waveguides and narrow-linewidth Bragg gratings were generated simultaneously by forming an array of refractive index voxels in a single laser scan. Laser pulse duration is shown to significantly affect the grating strength and waveguide loss. Bragg wavelengths, defined by the periodicity of laser-modified volumes, were fully controlled by the sample scan speed to provide resonances anywhere in the 1200 1620 nm telecommunication bands. Four linear Bragg filters with distinct resonant wavelengths are presented that define the first demonstration of laser writing of multiple-wavelength and cascaded Bragg grating waveguides in a single process step.

© 2006 Optical Society of America

OCIS Codes
(230.1480) Optical devices : Bragg reflectors
(230.7370) Optical devices : Waveguides
(320.2250) Ultrafast optics : Femtosecond phenomena
(350.3390) Other areas of optics : Laser materials processing

ToC Category:
Optical Devices

Original Manuscript: July 5, 2006
Revised Manuscript: August 28, 2006
Manuscript Accepted: August 31, 2006
Published: November 9, 2006

Haibin Zhang, Shane M. Eaton, Jianzhao Li, and Peter R. Herman, "Femtosecond laser direct writing of multiwavelength Bragg grating waveguides in glass," Opt. Lett. 31, 3495-3497 (2006)

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