Polarisation-independent strong Bragg gratings inplanar lightwave circuits
- 5 March 1998
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 34 (5) , 485-486
- https://doi.org/10.1049/el:19980338
Abstract
High intensity ArF laser irradiation produces Bragg gratings with index modulations > 10–3 in standard germanium-doped silica waveguides without hydrogen loading. A UV-induced birefringence of 2 × 10–4 is used to compensate for the inherent birefringence of the silica waveguides and makes the grating response identical for TE and TM modes.Keywords
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