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Light-Induced Array of Three-Dimensional Waveguides in Lithium Niobate by Employing Two-Beam Interference Field |
| ZHANG Peng;YANG De-Xing;ZHAO Jian-Lin;SU Kun;ZHOU Jian-Bo;LI Bi-Li;YANG Dong-Sheng |
| Institute of Optical Information Science and Technology and Department of Applied Physics, Northwestern Polytechnical University, Xi’an 710072 |
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| Cite this article: |
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ZHANG Peng, YANG De-Xing, ZHAO Jian-Lin et al 2004 Chin. Phys. Lett. 21 1558-1561 |
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Abstract We propose a novel approach to fabricate an array of three-dimensional waveguides in lithium niobate by employing illuminations of a pair of mutually coherent or incoherent two-beam interference patterns. Adjusting periods of the patterns and the angle between the grating vectors of the two patterns, we find that arrays of square, rectangular or parallelogrammic waveguides can be created. An array of rectangular waveguides is demonstrated in an iron doped lithium niobate by the double exposures of two-beam interference patterns with different orientations. The measured index distribution and the guiding test results show that the waveguide array is successfully fabricated.
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| Keywords:
42.82.Ct
42.65.Wi
42.82.Et
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Published: 01 August 2004
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