High-extinction ratio TE-pass polarizer fabricated in LiNbO3 by proton exchange and titanium indiffusion

Jiarong Ji; Ying Feng

doi:10.1117/12.253176

30 September 1996 High-extinction ratio TE-pass polarizer fabricated in LiNbO₃ by proton exchange and titanium indiffusion

Jiarong Ji, Ying Feng

Author Affiliations +

Proceedings Volume 2891, Integrated Optoelectronics; (1996) https://doi.org/10.1117/12.253176
Event: Photonics China '96, 1996, Beijing, China

Abstract

TE-pass integrated optical waveguide polarizers have been made in Z-cut, T-propagating LiNbO₃ using titanium indiffusion in conjunction with proton exchange. The two exchanged regions are adjacent to the Ti-indiffused waveguide on both sides and at the output end of the sample. In the proton-exchanged regions, (Delta) n_e > 0, (Delta) n_o < 0. Thus, the TM mode is radiated into the substrate. The polarizer operating at (lambda) equals 1.3 micrometers exhibits an extinction ratio > 53 dB and fiber-waveguide- fiber excess loss is 4 dB.

Citation Download Citation

Jiarong Ji and Ying Feng "High-extinction ratio TE-pass polarizer fabricated in LiNbO₃ by proton exchange and titanium indiffusion", Proc. SPIE 2891, Integrated Optoelectronics, (30 September 1996); https://doi.org/10.1117/12.253176

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