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Design of strain-introduced MZI interleaver on LiNbO3 substrate

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Abstract

A strain-introduced Mach-Zehnder interferometer (MZI) interleaver on lithium niobate (LiNbO3) is proposed. The structure of the strain-introduced waveguide is designed in detail, and is produced by depositing a SiO2 film on the annealed proton-exchanged LiNbO3 waveguide. Considering the sensitivities of the edge strain to the deposition temperature and the thickness of the SiO2 film, an optimum design of 50 GHz interleaver on this structure is given through analyzing the effective index changes for E x pq mode by finite difference method (FDM). The length of the bending waveguide in this interleaver is just two thirds of that in the conventional interleaver due to the high refractive index difference.

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Authors and Affiliations

  1. College of Communication and Information Engineering, University of Electronic Science and Techonolgy of China, Chengdu, 611731, China

    Yan-lin Zheng  (郑燕琳), Kai-xin Chen  (陈开鑫) & Lu-wen Xie  (谢璐雯)

Authors
  1. Yan-lin Zheng  (郑燕琳)
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  2. Kai-xin Chen  (陈开鑫)
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  3. Lu-wen Xie  (谢璐雯)
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Corresponding author

Correspondence to Yan-lin Zheng  (郑燕琳).

Additional information

This work has been supported by the National Natural Science Foundation of China (No.61177054).

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Zheng, Yl., Chen, Kx. & Xie, Lw. Design of strain-introduced MZI interleaver on LiNbO3 substrate. Optoelectron. Lett. 9, 4–8 (2013). https://doi.org/10.1007/s11801-013-2339-5

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  • DOI: https://doi.org/10.1007/s11801-013-2339-5

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