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- Title
Planar waveguides in calcium barium niobate fabricated by MeV He ion implantation.
- Authors
Fu, G.; Wang, K.-M.; Wang, X.-L.; Zhang, H.-J.; Xu, X.-G.; Song, H.-L.; Ma, H.-J.
- Abstract
A planar optical waveguide was formed in calcium barium niobate (CBN) crystal by 2.8-MeV He-ion implantation with a dose of 1.0×1016 ions/cm2 at room temperature. The prism-coupling method was used to take dark mode measurements at both 633 nm and 1539 nm. The refractive-index profile (no and ne) of the He-implanted CBN waveguide was analyzed with the reflectivity calculation method. The results show that the MeV He implantation results in a decrease in refractive index in barriers for both no (4.1%) and ne (3.1%), but for ne there is an increase in the waveguide region. The intensity profile of the guide mode and waveguide loss were obtained by end-fire coupling.
- Subjects
OPTICAL waveguides; WAVEGUIDES; OPTOELECTRONIC devices; NIOBATES; ION implantation; HELIUM ions
- Publication
Applied Physics B: Lasers & Optics, 2007, Vol 87, Issue 2, p289
- ISSN
0946-2171
- Publication type
Article
- DOI
10.1007/s00340-007-2606-x