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Proceedings Paper

KTN optical waveguide devices with an extremely large electro-optic effect
Author(s): Kazuo Fujiura; Koichiro Nakamura
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Paper Abstract

KTa1-xNbxO3 crystal exhibits an extremely large quadratic electro-optic effect, which is 20 times greater than that of LiNbO3. This property makes this crystal attractive for optical signal processing applications. We have successfully prepared a 2-inch KTN crystal that exhibits the largest quadratic electro-optic coefficient ever reported. We have also fabricated a buried optical waveguide with a low transmission loss and demonstrated an optical switch with a driving voltage of 2.6 V and a 92 nsec rise time. This paper reviews the crystal growth, material properties, electro-optic effect, waveguide fabrication, and optical switch operation of KTN crystal.

Paper Details

Date Published: 10 January 2005
PDF: 15 pages
Proc. SPIE 5623, Passive Components and Fiber-based Devices, (10 January 2005); doi: 10.1117/12.580527
Show Author Affiliations
Kazuo Fujiura, NTT Photonics Labs. (Japan)
Koichiro Nakamura, NTT Photonics Labs. (Japan)


Published in SPIE Proceedings Vol. 5623:
Passive Components and Fiber-based Devices
Yan Sun; Shuisheng Jian; Sang Bae Lee; Katsunari Okamoto, Editor(s)

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