Journal of Lightwave Technology · 2016 · 141 citations · 8 references
EngineeringElectrical EngineeringMaterials ScienceOpticsOptoelectronicsPhotonicsElectro-optic EffectsElectro-optic MaterialsModulationOptical Communication SystemsOptical ModulationOptical ModulatorsBandwidthElectro-optic ModulationElectro-optic ModulatorsExtinction RatioHeterostructure DevicesHigh-speed Optical ModulationMach-zehnder ModulatorsQuadrature Modulators
We report novel high-bandwidth InP-based Mach-Zehnder modulator and in-phase/quadrature (IQ) modulators that we realized by combining an n-i-p-n heterostructure and a capacitively loaded traveling wave electrode. The extremely low electrical and optical loss structure enhances the 3-dB electro-optic bandwidth of over 67 GHz without degrading other properties such as driving voltage and optical loss. The modulator also exhibits a static extinction ratio of over 24 dB with a Vπ of less than 1.5 V for the entire C-band. Furthermore, we demonstrate the first 120-Gbaud rate IQ modulation without optical pre equalization, and 100-Gb/s non-return-to-zero on-off keying modulation with a dynamic extinction ratio of over 10 dB.
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High Symbol Rate Coherent Optical Transmission Systems: 80 and 107 Gbaud
G. Raybon, A. Adamiecki, Peter J. Winzer et al. · Journal of Lightwave Technology · 2014 · 81 citations · Full text