A TE-TM mode splitter on lithium niobate using Ti, Ni, and MgO diffusions
- 1 February 1994
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 6 (2) , 245-248
- https://doi.org/10.1109/68.275439
Abstract
A new TE-TM mode splitter with an asymmetric Y-junction structure fabricated by diffusing different materials into Y-cut lithium niobate is presented. Randomly polarized light launched into a titanium indiffused waveguide is split into TE and TM modes by two different single-polarization waveguides. The ordinary-polarized waveguide is made by nickel indiffusion and the extraordinary-polarized waveguide by magnesium-oxide induced lithium outdiffusion. The measured extinction ratios are greater than 20 dB for both TE and TM modes. The devices operate over a wide wavelength range and have a large fabrication tolerance.Keywords
This publication has 9 references indexed in Scilit:
- Fabrication of magnesium-oxide-induced lithium outdiffusion waveguidesIEEE Photonics Technology Letters, 1992
- A polarization splitter on LiNbO/sub 3/ using only titanium diffusionJournal of Lightwave Technology, 1991
- A TE-TM mode splitter in LiNbO/sub 3/ by proton exchange and Ti diffusionJournal of Lightwave Technology, 1989
- Semivectorial polarised finite difference method for optical waveguides with arbitrary index profilesIEE Proceedings J Optoelectronics, 1988
- Fabrication techniques of lithium niobate waveguidesIEE Proceedings J Optoelectronics, 1988
- Passive Ti:LiNbO3 channel waveguide TE-TM mode splitterApplied Physics Letters, 1984
- An optical TE-TM mode splitter using a LiNbO3 branching waveguideApplied Physics Letters, 1980
- An optical waveguide TE-TM mode splitterApplied Physics Letters, 1978
- Metal-diffused optical waveguides in LiNbO3Applied Physics Letters, 1974