Traveling wave electrode simulation for integrated lithium niobite electro-optic modulators

Dandan Wang; Yu Liu; Borui Xu; Wenhui Sun; Zhiyao Jia; Sha Zhu; Ninghua Zhu

doi:10.1117/12.2586738

12 March 2021 Traveling wave electrode simulation for integrated lithium niobite electro-optic modulators

Dandan Wang, Yu Liu, Borui Xu, Wenhui Sun, Zhiyao Jia, Sha Zhu, Ninghua Zhu

Proceedings Volume 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications; 117633T (2021) https://doi.org/10.1117/12.2586738
Event: Seventh Symposium on Novel Photoelectronic Detection Technology and Application 2020, 2020, Kunming, China

Abstract

With the improvement of information transmission rate and the progress of semiconductor process technology, Lithium Niobite on insulator (LNOI) electro-optic modulators have received more and more attention. The LNOI modulators have high linearity and extinction ratio that silicon-based modulators do not reach, so it can be used to support high-speed and long-distance optical communication. In the LNOI modulator, the traveling wave electrodes with coplanar waveguides (CPWs) structure are used. We mainly consider the impedance matching of microwave transmission, the velocity and loss of microwave and optical wave to obtain high-speed modulation devices. By means of Simulation, we get the optical waveguide single-mode condition and analyze the characteristic impedance, microwave effective refractive index and 3dB bandwidth of the electrode under that condition. The electrode with bandwidth of 70GHz and 𝑆₁₁ about -25dB is obtained.

Citation Download Citation

Dandan Wang, Yu Liu, Borui Xu, Wenhui Sun, Zhiyao Jia, Sha Zhu, and Ninghua Zhu "Traveling wave electrode simulation for integrated lithium niobite electro-optic modulators", Proc. SPIE 11763, Seventh Symposium on Novel Photoelectronic Detection Technology and Applications, 117633T (12 March 2021); https://doi.org/10.1117/12.2586738

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