Low-Loss Channel Waveguides in MgO:LiNbO3 and LiTaO3 by Pyrophosphoric Acid Proton Exchange

Kazuhisa Yamamoto, Kiminori Mizuuchi, Tetsuo Taniuchi

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The characteristics of proton-exchanged MgO-doped LiNbO3 (MgO:LiNbO3) and LiTaO3 waveguides fabricated by the pyrophosphoric acid process are reported. Using this process, low-loss (0.4 dB/cm) channel waveguides in MgO:LiNbO3 have been realized at 633 nm without annealing. The optical damage in MgO:LiNbO3 waveguides at 441.6 nm wavelength is lower than that obtained in LiNbO3. For LiTaO3, by annealing, low-loss (0.3 dB/cm) channel waveguides can be fabricated by pyrophosphoric acid proton exchange. No optical damage was observed in the LiTaO3 waveguides even when the incident power was above 1 mW at 442 nm.

Original languageEnglish
Pages (from-to)1059-1064
Number of pages6
JournalJapanese journal of applied physics
Volume31
Issue number4 R
DOIs
Publication statusPublished - 1992 Apr

Keywords

  • LiTaO
  • MgO:LiNbO
  • Proton exchange
  • Pyrophosphoric acid
  • Waveguide

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Low-Loss Channel Waveguides in MgO:LiNbO<sub>3</sub> and LiTaO<sub>3</sub> by Pyrophosphoric Acid Proton Exchange'. Together they form a unique fingerprint.

  • Cite this