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Frequency non-degenerate phase-sensitive optical parametric amplification based on four-wave-mixing in
Optics Express
|January 22, 2015
Summary
A novel silicon waveguide design enables tunable phase sensitive optical parametric amplification (PSA). This method enhances signal gain by 9 dB and bandwidth by 35 nm compared to phase insensitive amplification (PIA).
Area of Science:
- Photonics and Optical Engineering
- Semiconductor Devices
- Nonlinear Optics
Background:
- Phase sensitive optical parametric amplification (PSA) is crucial for advanced optical signal processing.
- Achieving efficient and tunable PSA on-chip remains a significant challenge.
- Existing methods often lack the required gain and bandwidth for practical applications.
Purpose of the Study:
- To propose and investigate a width-modulated silicon waveguide for non-degenerate PSA.
- To demonstrate tunability of the phase sensitive amplifier (PSA) input phase (θIn-PSA) through waveguide geometry.
- To enhance the gain and bandwidth of on-chip optical parametric amplification.
Main Methods:
- Fabrication of a width-modulated silicon waveguide structure.
- Theoretical analysis of phase tuning by adjusting waveguide width and length.
- Experimental characterization of gain and bandwidth performance of the PSA.
Main Results:
- The width-modulated waveguide allows effective tuning of the input phase (θIn-PSA).
- Maximum PSA gain is improved by 9 dB over phase insensitive amplifier (PIA) gain.
- PSA exhibits a 35 nm wider gain bandwidth compared to PIA.
Conclusions:
- The proposed width-modulated silicon waveguide successfully realizes tunable non-degenerate PSA.
- The demonstrated on-chip PSA offers significant improvements in gain and bandwidth.
- This technology holds potential for highly integrated optical circuits in optical communication and computing.
