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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 13 — Jun. 20, 2011
  • pp: 11992–11999

Femtosecond laser fabrication of birefringent directional couplers as polarization beam splitters in fused silica

Luís A. Fernandes, Jason R. Grenier, Peter R. Herman, J. Stewart Aitchison, and Paulo V. S. Marques  »View Author Affiliations

Optics Express, Vol. 19, Issue 13, pp. 11992-11999 (2011)

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Integrated polarization beam splitters based on birefringent directional couplers are demonstrated. The devices are fabricated in bulk fused silica glass by femtosecond laser writing (300 fs, 150 nJ at 500 kHz, 522 nm). The birefringence was measured from the spectral splitting of the Bragg grating resonances associated with the vertically and horizontally polarized modes. Polarization splitting directional couplers were designed and demonstrated with 0.5 dB/cm propagation losses and −19 dB and −24 dB extinction ratios for the polarization splitting.

© 2011 OSA

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.3390) Lasers and laser optics : Laser materials processing
(130.5440) Integrated optics : Polarization-selective devices

ToC Category:
Integrated Optics

Original Manuscript: March 29, 2011
Revised Manuscript: May 13, 2011
Manuscript Accepted: May 20, 2011
Published: June 6, 2011

Luís A. Fernandes, Jason R. Grenier, Peter R. Herman, J. Stewart Aitchison, and Paulo V. S. Marques, "Femtosecond laser fabrication of birefringent directional couplers as polarization beam splitters in fused silica," Opt. Express 19, 11992-11999 (2011)

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