Optimized design of 1×4 optical splitter based on annealed proton exchanged waveguides  in LiNbO3 crystal

Zuoyun Yang; Dayong Wang; Dengcai Yang; Yunxin Wang; Lu Rong

doi:10.1117/12.2038166

23 December 2013 Optimized design of 1×4 optical splitter based on annealed proton exchanged waveguides in LiNbO₃ crystal

Zuoyun Yang, Dayong Wang, Dengcai Yang, Yunxin Wang, Lu Rong

Author Affiliations +

Proceedings Volume 9043, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing; 904306 (2013) https://doi.org/10.1117/12.2038166
Event: International Conference on Optical Instruments and Technology (OIT2013), 2013, Beijing, China

Abstract

A 1×4 optical splitter based on annealed proton exchanged (APE) waveguides is designed and fabricated. The beam propagation method and refractive index profile of APE waveguide are analyzed numerically. The symmetry of the optical splitter is reformed and optimized by adding straight waveguide in the cascaded Y-branch structure. The relationship between the length of the straight waveguide and the beam-slipper coefficient is obtained. The function of the 1×4 optical splitter is simulated by the commercial software BeamProp (RSoft). And the result indicates that the output uniformity of the optical splitter is improved when the length of the straight waveguide is 1935μm. Furthermore, the polarization-maintaining is gained in the 1×4 optical splitter since only the TE mode can propagate in the APE waveguide in X-cut LiNbO₃ crystal. Finally, the optical splitter is fabricated and tested experimentally and the results show good agreement with the simulation.

Citation Download Citation

Zuoyun Yang, Dayong Wang, Dengcai Yang, Yunxin Wang, and Lu Rong "Optimized design of 1×4 optical splitter based on annealed proton exchanged waveguides in LiNbO₃ crystal", Proc. SPIE 9043, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Optical Signal Processing, 904306 (23 December 2013); https://doi.org/10.1117/12.2038166

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KEYWORDS

Waveguides

Phased array optics

Refractive index

Crystals

Beam propagation method

Wave propagation

Optical simulations

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