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Nonlinear wave propagation in an asymmetric converging Y junction
Optics Letters
|September 25, 2009
Summary
Nonlinear wave propagation in asymmetric Y junctions is studied. Efficient coupling from a nonlinear branch to a symmetric stem mode is demonstrated, suggesting applications in optical devices.
Area of Science:
- Optics and Photonics
- Nonlinear Wave Phenomena
Background:
- Investigating nonlinear wave propagation is crucial for developing advanced optical devices.
- Asymmetric Y junctions offer unique possibilities for light manipulation.
Purpose of the Study:
- To study nonlinear wave propagation in an asymmetric converging Y junction.
- To analyze the behavior of eigenmodes and coupling efficiency within the junction.
Main Methods:
- Calculation of nonlinear dispersion curves for Y junction sections.
- Illustration of eigenmode evolutions using computed dispersion data.
Main Results:
- The nonlinear cladding, linear film, and linear substrate structure is analyzed.
- High coupling efficiency is observed for fields evolving from the nonlinear thinner branch to the symmetric mode of the stem.
Conclusions:
- The asymmetric Y junction facilitates efficient mode conversion.
- The findings suggest potential for an insertion coupler in time-multiplexed loops.
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