scholarly journals Optimizing the Kerr nonlinear optical performance of silicon waveguides integrated with 2D graphene oxide films

2021 ◽  
pp. 1-1
Author(s):  
Yuning Zhang ◽  
Jiayang Wu ◽  
Yang Qu ◽  
Linnan Jia ◽  
Baohua Jia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Nonlinear Optical ◽  
Oxide Films ◽  
Optical Performance ◽  
Silicon Waveguides

scholarly journals Design of silicon waveguides with integrated graphene oxide films for nonlinear optics

2021 ◽  
Author(s):  
Yuning Zhang ◽  
Jiayang Wu ◽  
Yang Qu ◽  
Linnan Jia ◽  
Baohua Jia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Silicon Nanowires ◽  
Nonlinear Optical ◽  
Kerr Nonlinearity ◽  
Nonlinear Parameter ◽  
Propagation Loss ◽  
Optical Parameters ◽  
Optical Performance ◽  
Spectral Broadening ◽  
Silicon Waveguides

Abstract The Kerr nonlinear optical performance of silicon nanowire waveguides integrated with 2D layered graphene oxide (GO) films is theoretically studied and optimized based on experimentally measured linear and nonlinear optical parameters of the GO films. The strong mode overlap between the silicon nanowires and highly nonlinear GO films yields a significantly enhanced Kerr nonlinearity for the hybrid waveguides. A detailed analysis for the influence of waveguide geometry and GO film thickness on the propagation loss, nonlinear parameter, and nonlinear figure of merit (FOM) is performed. The results show that the effective nonlinear parameter and nonlinear FOM can be increased by up to ~ 52 and ~ 79 times relative to bare silicon nanowires, respectively. Self-phase modulation (SPM)-induced spectral broadening of optical pulses is used as a benchmark to evaluate the nonlinear performance, examining the trade-off between enhancing Kerr nonlinearity and minimizing loss. By optimizing the device parameters to balance this, a high spectral broadening factor of 27.8 can be achieved ‒ more than 6 times that achieved in previous experiments. Finally, the influence of pulse chirp, material anisotropy, and the interplay between saturable absorption and SPM is also discussed, together with the comparison between the spectral broadening after going through GO-coated and graphene-coated silicon waveguides. These results provide useful guidance for optimizing the Kerr nonlinear optical performance of silicon waveguides integrated with 2D layered GO films.

scholarly journals Design of silicon waveguides integrated with 2D graphene oxide films for Kerr nonlinear optics

2020 ◽  
Author(s):  
David Moss
Keyword(s):  
Graphene Oxide ◽  
Silicon Nanowires ◽  
Nonlinear Optical ◽  
Kerr Nonlinearity ◽  
Nonlinear Parameter ◽  
Propagation Loss ◽  
Optical Parameters ◽  
Optical Performance ◽  
Spectral Broadening ◽  
Silicon Waveguides

<p>The Kerr nonlinear optical performance of silicon nanowire waveguides integrated with 2D layered graphene oxide (GO) films is theoretically studied and optimized based on experimentally measured linear and nonlinear optical parameters of the GO films. The strong mode overlap between the silicon nanowires and highly nonlinear GO films yields a significantly enhanced Kerr nonlinearity for the hybrid waveguides. A detailed analysis for the influence of waveguide geometry and GO film thickness on the propagation loss, nonlinear parameter, and nonlinear figure of merit (FOM) is performed. The results show that the effective nonlinear parameter and nonlinear FOM can be increased by up to ≈52 and ≈79 times relative to bare silicon nanowires, respectively. Self-phase modulation (SPM)-induced spectral broadening of optical pulses is used as a benchmark to evaluate the nonlinear performance, examining the trade-off between enhancing Kerr nonlinearity and minimizing loss. By optimizing the device parameters to balance this, a high spectral broadening factor of 27.6 can be achieved ‒ more than 6 times that achieved in previous experiments. Finally, the influence of pulse chirp, material anisotropy, and the interplay between saturable absorption and SPM is also discussed. These results provide useful guidance for optimizing the Kerr nonlinear optical performance of silicon waveguides integrated with 2D layered GO films.</p><br>

scholarly journals Optimizing the Kerr nonlinear optical performance of silicon waveguides with integrated graphene oxide films

2021 ◽  
Author(s):  
David Moss
Keyword(s):  
Graphene Oxide ◽  
Silicon Nanowires ◽  
Nonlinear Optical ◽  
Kerr Nonlinearity ◽  
Nonlinear Parameter ◽  
Propagation Loss ◽  
Optical Parameters ◽  
Optical Performance ◽  
Spectral Broadening ◽  
Silicon Waveguides

The Kerr nonlinear optical performance of silicon nanowire waveguides integrated with 2D layered graphene oxide (GO) films is theoretically studied and optimized based on experimentally measured linear and nonlinear optical parameters of the GO films. The strong mode overlap between the silicon nanowires and highly nonlinear GO films yields a significantly enhanced Kerr nonlinearity for the hybrid waveguides. A detailed analysis for the influence of waveguide geometry and GO film thickness on the propagation loss, nonlinear parameter, and nonlinear figure of merit (FOM) is performed. The results show that the effective nonlinear parameter and nonlinear FOM can be increased by up to ~52 and ~79 times relative to bare silicon nanowires, respectively. Self-phase modulation (SPM)-induced spectral broadening of optical pulses is used as a benchmark to evaluate the nonlinear performance, examining the trade-off between enhancing Kerr nonlinearity and minimizing loss. By optimizing the device parameters to balance this, a high spectral broadening factor of 27.8 can be achieved ‒ more than 6 times that achieved in previous experiments. Finally, the influence of pulse chirp, material anisotropy, and the interplay between saturable absorption and SPM is also discussed, together with the comparison between the spectral broadening after going through GO-coated and graphene-coated silicon waveguides. These results provide useful guidance for optimizing the Kerr nonlinear optical performance of silicon waveguides integrated with 2D layered GO films.

Design of silicon waveguides integrated with 2D graphene oxide films for Kerr nonlinear optics

2020 ◽  
Author(s):  
David Moss
Keyword(s):  
Graphene Oxide ◽  
Silicon Nanowires ◽  
Nonlinear Optical ◽  
Kerr Nonlinearity ◽  
Nonlinear Parameter ◽  
Propagation Loss ◽  
Optical Parameters ◽  
Optical Performance ◽  
Spectral Broadening ◽  
Silicon Waveguides

<p>The Kerr nonlinear optical performance of silicon nanowire waveguides integrated with 2D layered graphene oxide (GO) films is theoretically studied and optimized based on experimentally measured linear and nonlinear optical parameters of the GO films. The strong mode overlap between the silicon nanowires and highly nonlinear GO films yields a significantly enhanced Kerr nonlinearity for the hybrid waveguides. A detailed analysis for the influence of waveguide geometry and GO film thickness on the propagation loss, nonlinear parameter, and nonlinear figure of merit (FOM) is performed. The results show that the effective nonlinear parameter and nonlinear FOM can be increased by up to ≈52 and ≈79 times relative to bare silicon nanowires, respectively. Self-phase modulation (SPM)-induced spectral broadening of optical pulses is used as a benchmark to evaluate the nonlinear performance, examining the trade-off between enhancing Kerr nonlinearity and minimizing loss. By optimizing the device parameters to balance this, a high spectral broadening factor of 27.6 can be achieved ‒ more than 6 times that achieved in previous experiments. Finally, the influence of pulse chirp, material anisotropy, and the interplay between saturable absorption and SPM is also discussed. These results provide useful guidance for optimizing the Kerr nonlinear optical performance of silicon waveguides integrated with 2D layered GO films.</p><br>

The effects of central metals on the photophysical and nonlinear optical properties of reduced graphene oxide–metal(ii) phthalocyanine hybrids

2015 ◽  
Vol 17 (11) ◽  
pp. 7149-7157 ◽  
Author(s):  
Weina Song ◽  
Chunying He ◽  
Yongli Dong ◽  
Wang Zhang ◽  
Yachen Gao ◽  
...  
Keyword(s):  
Optical Properties ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Optical Performance ◽  
Reduced Graphene

An investigation of the effects of central metals on the photophysical and nonlinear optical performance of RGO–MPc hybrids.

scholarly journals Enhanced 3 rd order optical nonlinearity in silicon nitride nanowires integrated with 2D graphene oxide films

2020 ◽  
Author(s):  
David Moss ◽  
yang qu ◽  
Jiayang Wu ◽  
Yunyi Yang ◽  
Yuning Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Silicon Nitride ◽  
Pump Power ◽  
Detailed Analysis ◽  
Nonlinear Optical ◽  
Optical Nonlinearity ◽  
Optical Performance ◽  
Third Order ◽  
Trade Off ◽  
Pattern Length

numbers of GO layers and at different pump powers. By optimizing the trade-off between the nonlinearity and loss, we obtain a significant improvement in the FWM conversion efficiency of ≈7.3 dB for a uniformly coated device with 1 layer of GO and ≈9.1 dB for a patterned device with 5 layers of GO. We also obtain a significant increase in FWM bandwidth for the patterned devices. A detailed analysis of the influence of pattern length and position on the FWM performance is performed. Based on the FWM measurements, the dependence of GO’s third-order nonlinearity on layer number and pump power is also extracted, revealing interesting physical insights about the 2D layered GO films. Finally, we obtain an enhancement in the effective nonlinear parameter of the hybrid waveguides by over a factor of 100. These results verify the enhanced nonlinear optical performance of SiN waveguides achievable by incorporating 2D layered GO films.

scholarly journals Enhancing the nonlinear optical response and nonlinear figure-of-merit for silicon nanowires by integrating 2D graphene oxide films

2020 ◽  
Author(s):  
David Moss
Keyword(s):  
Graphene Oxide ◽  
Silicon Nanowires ◽  
Phase Modulation ◽  
Figure Of Merit ◽  
Nonlinear Optical ◽  
Silicon Nanowire ◽  
Oxide Films ◽  
Optical Pulses ◽  
Spectral Broadening ◽  
Silicon Waveguide

We experimentally demonstrate enhanced self-phase modulation in silicon nanowire waveguides integrated with layered graphene oxide films. We achieve spectral broadening of optical pulses in the GO-silicon waveguide with a broadening factor up to 2.96.

Enhancing the nonlinear optical response and nonlinear figure-of-merit for silicon nanowires by integrating 2D graphene oxide films

2020 ◽  
Author(s):  
David Moss
Keyword(s):  
Graphene Oxide ◽  
Silicon Nanowires ◽  
Phase Modulation ◽  
Figure Of Merit ◽  
Nonlinear Optical ◽  
Silicon Nanowire ◽  
Oxide Films ◽  
Optical Pulses ◽  
Spectral Broadening ◽  
Silicon Waveguide

We experimentally demonstrate enhanced self-phase modulation in silicon nanowire waveguides integrated with layered graphene oxide films. We achieve spectral broadening of optical pulses in the GO-silicon waveguide with a broadening factor up to 2.96.

scholarly journals Enhanced 3 rd order optical nonlinearity in silicon nitride nanowires integrated with 2D graphene oxide films

2020 ◽  
Author(s):  
David Moss ◽  
yang qu ◽  
Jiayang Wu ◽  
Yunyi Yang ◽  
Yuning Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Silicon Nitride ◽  
Pump Power ◽  
Detailed Analysis ◽  
Nonlinear Optical ◽  
Optical Nonlinearity ◽  
Optical Performance ◽  
Third Order ◽  
Trade Off ◽  
Pattern Length

numbers of GO layers and at different pump powers. By optimizing the trade-off between the nonlinearity and loss, we obtain a significant improvement in the FWM conversion efficiency of ≈7.3 dB for a uniformly coated device with 1 layer of GO and ≈9.1 dB for a patterned device with 5 layers of GO. We also obtain a significant increase in FWM bandwidth for the patterned devices. A detailed analysis of the influence of pattern length and position on the FWM performance is performed. Based on the FWM measurements, the dependence of GO’s third-order nonlinearity on layer number and pump power is also extracted, revealing interesting physical insights about the 2D layered GO films. Finally, we obtain an enhancement in the effective nonlinear parameter of the hybrid waveguides by over a factor of 100. These results verify the enhanced nonlinear optical performance of SiN waveguides achievable by incorporating 2D layered GO films.

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