Integrated Optics

Photo-written waveguides in iron-doped lithium niobate crystal employing binary optical masks

[+] Author Affiliations
Peng Zhang

Northwestern Polytechnical University, Institute of Optical Information Science and Technology, School of Science, Xi’an 710072, China

Dexing Yang

Northwestern Polytechnical University, Institute of Optical Information Science and Technology, School of Science, Xi’an 710072, China

Jianlin Zhao

Northwestern Polytechnical University, Institute of Optical Information Science and Technology, School of Science, Xi’an 710072, China

Meirong Wang

Northwestern Polytechnical University, Institute of Optical Information Science and Technology, School of Science, Xi’an 710072, China

Opt. Eng. 45(7), 074603 (July 05, 2006). doi:10.1117/1.2219443
History: Received August 10, 2005; Revised November 17, 2005; Accepted December 09, 2005; Published July 05, 2006
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Photo-written waveguides employing binary optical masks are investigated in an iron-doped lithium niobate crystal. Planar and Y-branch waveguides are experimentally demonstrated. The index variations along the propagation direction of the writing beam in the crystal are experimentally measured and theoretically analyzed. The influence of the diffraction from the optical masks, which imposes a limitation for the applications of the waveguide fabrication method, is numerically specified. Additionally, the asymmetry of the index distribution in the waveguide region, which is related to the transport process of the photoexcited charge carriers, is revealed and qualitatively explained.

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© 2006 Society of Photo-Optical Instrumentation Engineers

Citation

Peng Zhang ; Dexing Yang ; Jianlin Zhao and Meirong Wang
"Photo-written waveguides in iron-doped lithium niobate crystal employing binary optical masks", Opt. Eng. 45(7), 074603 (July 05, 2006). ; http://dx.doi.org/10.1117/1.2219443


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