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Modulated coupled nanowires for ultrashort pulses
Optics Letters
|September 15, 2015
Summary
Periodic waveguide bending precisely controls intermode dispersion in nanowire arrays. This enables flexible spatiotemporal pulse reshaping without breaking femtosecond pulses.
Area of Science:
- Nanophotonics
- Waveguide Optics
Background:
- Intermode dispersion in nanowire waveguide arrays is a key parameter.
- Controlling spatial diffraction and temporal dispersion simultaneously is challenging in nanophotonic structures.
Purpose of the Study:
- To investigate tailoring intermode dispersion in nanowire waveguide arrays.
- To achieve flexible spatiotemporal reshaping of femtosecond pulses without breakup.
- To enable independent control over temporal dispersion and spatial diffraction.
Main Methods:
- Analytical prediction of intermode dispersion.
- Numerical simulations to confirm analytical models.
- Utilizing periodic waveguide bending in nanowire arrays.
Main Results:
- Periodic waveguide bending effectively tailors intermode dispersion.
- Demonstrated flexible spatiotemporal reshaping of femtosecond pulses.
- Achieved simultaneous and independent control of temporal dispersion and spatial diffraction.
Conclusions:
- Periodic waveguide bending offers a novel method for controlling light propagation in nanowire arrays.
- This technique provides unprecedented flexibility in manipulating light pulses for nanophotonic applications.
