High-efficiency acoustooptic guided-mode to leaky-mode conversion in proton-exchanged lithium niobate waveguides

Author

Do, N.T. ; Su, Jianhui ; Yoo, Jerald ; Matteo, A.M. ; Tsai, C.S.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Irvine, CA, USA

Volume

1

fYear

1999

fDate

17-20 Oct. 1999

Firstpage

613

Abstract

The detailed results of an experimental study on high-efficiency collinear acoustooptic interaction in proton-exchanged lithium niobate (PE:LiNbO₃) are presented. The guided-to-leaky mode-conversion for an optical beam at the wavelength of 0.6328 μm has been measured for different surface acoustic wave (SAW) carrier frequencies on x- and z-cut PE:LiNbO₃. An optical guided TM mode to substrate TE mode conversion with efficiency as high as 77% has been observed with a SAW center frequency of 367 MHz and an input RF drive power density of 65 mW/mm on z-cut LiNbO₃. In addition, an optical guided TE mode to substrate TE mode conversion with efficiency of 90% has been observed with a SAW center frequency of 103 MHz and an input RF drive power density of 94 mW/mm on x-cut LiNbO₃.

Keywords

acousto-optical signal processing; lithium compounds; substrates; surface acoustic wave waveguides; 0.6328 mum; 103 MHz; 367 MHz; 77 percent; 90 percent; SAW center frequency; acoustooptic guided-mode; center frequency of 103 MHz; collinear acoustooptic interaction; efficiency of 90%; input RF drive power density; leaky-mode conversion; optical guided TE mode; proton-exchanged lithium niobate waveguides; wavelength of 0.6328 μm; x-PE:LiNbO₃; z-cut PE:LiNbO₃; Acoustic measurements; Frequency conversion; Frequency measurement; Lithium niobate; Optical beams; Optical frequency conversion; Radio frequency; Surface acoustic waves; Tellurium; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE

Conference_Location

Caesars Tahoe, NV

ISSN

1051-0117

Print_ISBN

0-7803-5722-1

Type

conf

DOI

10.1109/ULTSYM.1999.849474

Filename

849474