Title :
KTN crystal with a large electro-optic effect and the potential for improving optical device performance
Author :
Fujiura, K. ; Nakamura, K.
Author_Institution :
NTT Photonics Labs., Japan
Abstract :
KTa1-xNbxO3 (KTN) crystal exhibits an extremely large quadratic electro-optic effect, which makes it attractive for highly functional device applications. We have developed a crystal growth technology and successfully prepared 40 mm square KTN crystals. In addition, we have developed film growth and lithographic techniques for KTN crystal that can be used to fabricate an optical waveguide with excellent optical transmission performance. An optical switch using these KTN waveguides had a low driving voltage less than 1/10 that of conventional optical switches. In this workshop, we describe the crystal growth, material properties, waveguide fabrication, and device operation of KTN crystal.
Keywords :
crystal growth; electro-optical devices; electro-optical effects; optical fabrication; optical materials; optical switches; optical waveguides; photolithography; potassium compounds; 40 mm; KTN crystal; KTN waveguides; KTaO3NbO3; crystal growth technology; device operation; film growth; highly functional device applications; large electro-optic effect; lithographic techniques; material properties; optical device performance; optical switch; optical transmission performance; optical waveguide; waveguide fabrication; Crystals; Electrooptic devices; Low voltage; Material properties; Niobium; Optical devices; Optical films; Optical switches; Optical waveguides; Ultraviolet sources;
Conference_Titel :
Microwave Photonics, 2004. MWP'04. 2004 IEEE International Topical Meeting on
Print_ISBN :
0-7803-8491-1
DOI :
10.1109/MWP.2004.1396817
