90 degrees S-bends in Ti:LiNbO/sub 3/ waveguides with low losses
- 1 July 1993
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 5 (7) , 806-808
- https://doi.org/10.1109/68.229813
Abstract
S-shaped titanium waveguide bends with deflecting angles as large as 90 degrees have been fabricated on z-cut LiNbO/sub 3/ with bend radii of 5 mm. Nearly polarization independent bends have been achieved by simply broadening and thickening the Ti strips asymmetrically in the bent sections, yielding excess losses of approximately 1.5 dB for a single 90 degrees bend. Although Ti thickening and broadening yields the best results, Ti broadening in conjunction with MgO indiffusion is an alternative that is less critical with respect to mask alignment and device design.<>Keywords
This publication has 4 references indexed in Scilit:
- Low-loss Ti:LiNbO/sub 3/-waveguide bends prepared by MgO indiffusionJournal of Lightwave Technology, 1990
- Fabrication of low-loss titanium-diffused LiNbO 3 waveguides using a closed platinum crucibleElectronics Letters, 1987
- Reduction of bend losses in Ti:LiNbO 3 waveguides through MgO double diffusionElectronics Letters, 1987
- Greatly reduced losses for small-radius bends in Ti:LiNbO3 waveguidesApplied Physics Letters, 1986