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Optics Letters

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  • Vol. 28, Iss. 24 — Dec. 15, 2003
  • pp: 2491–2493

Wavelength division with three-dimensional couplers fabricated by filamentation of femtosecond laser pulses

Wataru Watanabe, Taishi Asano, Kazuhiro Yamada, Kazuyoshi Itoh, and Junji Nishii  »View Author Affiliations


Optics Letters, Vol. 28, Issue 24, pp. 2491-2493 (2003)
http://dx.doi.org/10.1364/OL.28.002491


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Abstract

Refractive-index changes can be induced by filamentation of 800-nm, 1-kHz femtosecond laser pulses in silica glass. Two-dimensional translation of a 40-μm -long filament leads to the formation of a curved waveguide because of bending by the previously induced refractive-index change. The fabrication of 2-mm directional couplers to split the coupled beam into 1:1 at a wavelength of 632.8 nm is demonstrated. The realization of three-dimensional directional couplers and wavelength division in the output from the couplers is also demonstrated.

© 2003 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(230.7370) Optical devices : Waveguides
(260.5950) Physical optics : Self-focusing
(320.7110) Ultrafast optics : Ultrafast nonlinear optics

Citation
Wataru Watanabe, Taishi Asano, Kazuhiro Yamada, Kazuyoshi Itoh, and Junji Nishii, "Wavelength division with three-dimensional couplers fabricated by filamentation of femtosecond laser pulses," Opt. Lett. 28, 2491-2493 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-24-2491


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