Design and characterisation of high-speed monolithic silicon modulators for digital coherent communication

Kensuke Ogawa; Kazuhiro Goi; Akira Oka; Yasuhiro Mashiko; Tsung-Yang Liow; Xiaoguang Tu; Guo-Qiang Lo; Dim-Lee Kwong; Soon Thor Lim; Min Jie Sun; Ching Eng Png

doi:10.1117/12.2078080

27 February 2015 Design and characterisation of high-speed monolithic silicon modulators for digital coherent communication

Kensuke Ogawa, Kazuhiro Goi, Akira Oka, Yasuhiro Mashiko, Tsung-Yang Liow, Xiaoguang Tu, Guo-Qiang Lo, Dim-Lee Kwong, Soon Thor Lim, Min Jie Sun, Ching Eng Png

Author Affiliations +

Proceedings Volume 9367, Silicon Photonics X; 93670C (2015) https://doi.org/10.1117/12.2078080
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

Latest computational and experimental studies on high-speed monolithic silicon-based Mach-Zehnder optical modulators are studied in the light of photonic integrated circuits for digital coherent communication at a bit rate as fast as 128 Gb/s per wavelength channel. Lateral PN-junction rib-waveguide phase shifters are elaborated with experimental characteristics of DC phase shifter response in comparison with computational characteristics. High-speed response in refractive-index dynamics including electron and hole transport in the PN junction is simulated to study speed limit of the phase shifters. The performance in quadrature phase-shift keying signal generation is characterized in experimental and computational constellation diagrams. Silicon waveguides for polarization-division multiplexing are designed in common design rules with the rib-waveguide phase shifters. Long-haul transmission in polarization-multiplexed quadrature phase-shift keying in 1000-km single-mode fiber link is confirmed with a monolithic silicon Mach-Zehnder modulator assembled with modulator drivers in a ceramic-based metal package.

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Kensuke Ogawa, Kazuhiro Goi, Akira Oka, Yasuhiro Mashiko, Tsung-Yang Liow, Xiaoguang Tu, Guo-Qiang Lo, Dim-Lee Kwong, Soon Thor Lim, Min Jie Sun, and Ching Eng Png "Design and characterisation of high-speed monolithic silicon modulators for digital coherent communication", Proc. SPIE 9367, Silicon Photonics X, 93670C (27 February 2015); https://doi.org/10.1117/12.2078080

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