Periodically poled LiNbO3 wavelength converter with buried waveguide in telecommunication wavelength

T. Kishimoto; K. Inafune; Y. Ogawa; N. Sekine; H. Murai; H. Sasaki

doi:10.1117/12.2542210

2 March 2020 Periodically poled LiNbO₃ wavelength converter with buried waveguide in telecommunication wavelength

T. Kishimoto, K. Inafune, Y. Ogawa, N. Sekine, H. Murai, H. Sasaki

Proceedings Volume 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX; 112641R (2020) https://doi.org/10.1117/12.2542210
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

We have developed a periodically poled LiNbO3 (PPLN) wavelength converter with a buried waveguide to improve a mode overlap between a fundamental light and a converted light. We formed a periodically poling by applying highvoltage and a buried waveguide by mechanical processes and a burying process. We designed quasi-phase-matching for second harmonic generation (SHG) in a telecommunication wavelength. We achieved a larger overlap between them in the PPLN buried waveguide than that in a ridge waveguide and confirmed improvement of the SHG conversion efficiency. We also demonstrated wavelength conversion based on cascaded SHG and difference frequency generation (DFG) in a single PPLN waveguide device for fiber-optic communication systems. Additionally, we found out a signal wavelength conversion bandwidth of the cascaded SHG and DFG covering most of C and L bands.

Citation Download Citation

T. Kishimoto, K. Inafune, Y. Ogawa, N. Sekine, H. Murai, and H. Sasaki "Periodically poled LiNbO₃ wavelength converter with buried waveguide in telecommunication wavelength", Proc. SPIE 11264, Nonlinear Frequency Generation and Conversion: Materials and Devices XIX, 112641R (2 March 2020); https://doi.org/10.1117/12.2542210

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