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 language | English |
|---|---|
| Pages (from-to) | 1059-1064 |
| Number of pages | 6 |
| Journal | Japanese journal of applied physics |
| Volume | 31 |
| Issue number | 4 R |
| DOIs | |
| Publication status | Published - 1992 Apr |
Keywords
- LiTaO
- MgO:LiNbO
- Proton exchange
- Pyrophosphoric acid
- Waveguide
ASJC Scopus subject areas
- Engineering(all)
- Physics and Astronomy(all)
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Yamamoto, K., Mizuuchi, K., & Taniuchi, T. (1992). Low-Loss Channel Waveguides in MgO:LiNbO3 and LiTaO3 by Pyrophosphoric Acid Proton Exchange. Japanese journal of applied physics, 31(4 R), 1059-1064. https://doi.org/10.1143/JJAP.31.1059