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Title: Femtosecond laser fabrication of phase-shifted Bragg grating waveguides in fused silica
Authors: Paulo Vicente Marques
Jason R. Grenier
Luís André Fernandes
J. Stewart Aitchison
Peter R. Herman
Issue Date: 2012
Abstract: Phase-shifted Bragg grating waveguides (PSBGWs) were formed in bulk fused silica glass by femtosecond laser direct writing to produce narrowband 22+-3 pm filters at 1550 nm. Tunable π and other phase shifts generated narrow passbands in controlled positions of the Bragg stopband, while the accurate placement of multiple cascaded phase-shift regions yielded a rectangular-shaped bandpass filter. A waveguide birefringence of 7.5+-0.3 × 10^(−5) is inferred from the polarization-induced spectral shifting of the PSBGW narrowband filters.
metadata.dc.type: article
Appears in Collections:CAP - Articles in International Journals

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