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Knowledge Base

Returns the power injected into the simulation region by a dipole source. In 3D simulations, the units will be in Watts if cwnorm is used, and Watts/Hertz2 if nonorm is used.

 

The dipolepower script command returns the power that was injected into the simulation region, and is equivalent to measuring the power transmitted out of a small box surrounding the dipole. In contrast, sourcepower will return the power that the dipole would radiate in a homogeneous material. dipolepower and sourcepower are equivalent for dipoles in a homogeneous medium.

 

Advanced notes:

If the dipole is located within a dispersive medium (with a non-zero imaginary part of the refractive index), then the results of this function are not reliable. In such situations, using a box of monitors around the dipole is recommended.

Numerical errors in this calculation may become noticeable when very small simulation mesh sizes are used. If the mesh step is the order of, or smaller than, λ/1000, verifying the dipolepower results by measuring the radiated power with a small box of monitors surrounding the dipole is recommended.

 

Please visit the Support Center for more assistance if you are using a dipole in a dispersive medium.

 

Supported Product: FDTD, MODE

 

Syntax

Description

out = dipolepower(f);

Returns the amount of power radiated by the dipole source, at frequency points f. (f in Hz)

out = dipolepower(f, name);

This option allows you to obtain the power radiated by a single dipole, rather than the sum of all dipoles. This option is only needed for simulations with multiple dipoles.

 

Examples

See the Dipoles - Radiated Power page and the Fluorescence enhancement application example.

 

See Also

sourcenorm, sourcepower, sourcepower_avg, sourcepower_pavg, transmission, cwnorm, nonorm

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