Abstract
In this paper, a structure of second-order differentiator based on long-period waveguide grating (LPWG) is proposed. The second-order differentiator consists of two segment uniform gratings, one segment waveguide and electrode correspondingly deposited on both sides of waveguide on x-cut lithium niobate (LN) crystal. The performances of the second-order differentiator are analyzed and simulated. It shows that it can be implemented by introducing π-phase shift by adjusting voltage according to the electro-optic effect of LN.
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Acknowledgements
This work was supported by National Natural Science Foundation of China (Project 61377075).
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Zhang, A., Song, H., Geng, B. (2021). Second-Order Differentiator Based on Long-Period Waveguide Grating. In: Xu, L., Zhou, L. (eds) Proceedings of the 8th International Multidisciplinary Conference on Optofluidics (IMCO 2018). IMCO 2018. Lecture Notes in Electrical Engineering, vol 531. Springer, Singapore. https://doi.org/10.1007/978-981-13-3381-1_14
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DOI: https://doi.org/10.1007/978-981-13-3381-1_14
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