Detector

class strapy.Detector.Detector(name, node, properties)

A detector for logging electric field amplitude and related properties.

An instance of the Detector class is created for each detector added to a model. The detector will log at least the electric field amplitude at the specified node, and optionally calculate other properties. Detectors can currently monitor:

• amplitude - the amplitudes of the forward and backward

  propagating S and P polarised electric fields.

• intensity - the total intensity of light passing through the

  detector, including both polarisations propagating in both directions.

• S intensity - the intensity of S polarised light passing

  through the detector in both directions.

• P intensity - the intensity of P polarised light passing

  through the detector in both directions.

Note that calculated intensity is proportional to both the amplitude and the dielectric properties of the medium; the intensity for a detector is only directly comparable to other intensities calculated in the same medium.

Attributes:

name : str

Unique name of the detector.

node : str

Node to be monitored by detector.

properties : tuple of str

Optical properties to be logged - see description for current options.

node_index : int

Index of the node the detector is to monitor in the solution vector.

Methods

update(solution_vector)

Update the detected values from solution vector.

update(solution_vector)

Update the detected values from solution vector.

Parameters:

solution_vector : ndarray

solution to network matrix equation.