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15 results on '"Loi, K. K."'

5. High-index proton-exchanged MgO:LiNbO3 optical waveguides using adipic acid.

Author

Pun, E. Y. B., Loi, K. K., Mak, C. F., and Chung, P. S.

Subjects
*ION exchange (Chemistry), *FERROELASTIC crystals
Abstract

Presents a study which demonstrated the fabrication and characterization of proton-exchanged optical waveguides in z-cut magnesium-oxide-doped lithium niobate crystal (MgO:LiNbO[sub3]) using adipic acid as a proton source. Background on the crystal; Description of the experimental setup; Findings.

Published
1993
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13. CHARACTERIZATION OF ANNEALED PROTON-EXCHANGED LiNbO3 WAVEGUIDES FABRICATED USING TOLUIC ACID.

Author

Loi, K. K., Pun, E. Y. B., and Chung, P. S.

Subjects
*OPTICAL waveguides, *PROTONS, *TOLUIC acid, *INTEGRATED optics, *WAVEGUIDES, *PROTON transfer reactions
Abstract

Annealing properties of proton-exchanged optical waveguides in z-cut LiNbO3 fabricuted using toluic acid are reported. Variations in the surface refractive index and waveguide depth with annealing time are found to follow a power-taw relationship, and a minimum propagation loss of 0.23 dB/cm is measured at 0.633-µm wavelength. [ABSTRACT FROM AUTHOR]

Published
1993
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14. ANNEALING EFFECTS ON PROTON-EXCHANGED LiNbO3 OPTICAL WAVEGUIDES USING STEARIC ACID.

Author

Pun, E. Y. B., Chung, P. S., and Loi, K. K.

Subjects
PROTONS, OPTICAL waveguides, INTEGRATED optics, STEARIC acid, WAVEGUIDES
Abstract

Annealing of proton-exchanged planar optical waveguides in z-cut LiNbO3 fabricated using stearic acid has been studied systematically. The effects of annealing on waveguide propagation loss, surface index change, and waveguide depth were measured as a function of annealing time, and were found to follow a power-law relationship. [ABSTRACT FROM AUTHOR]

Published
1992
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