Critical power in a symmetric nonlinear directional coupler
| ISSN: |
1572-817X
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Electrical Engineering, Measurement and Control Technology
Physics
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| Notes: |
Abstract An alternative theoretical analysis directed to obtaining a more accurate expression for the critical power in the symmetric nonlinear directional coupler, or other nonlinear, five-layer waveguiding structures, is reported. Our analysis works with the nonlinear supermodes of the waveguide, and it is presented as an improvement of the preceding study by Silberberg and Stegeman [1]. Numerical simulations comparing both techniques, and by means of the beam propagation method, are reported for a few cases. A set of three representative, power dependent parameters is proposed, in order to give a comprehensive view of the power flow between both branches in the device as a function of the excitation conditions.
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| Type of Medium: |
Electronic Resource
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| URL: |