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Applied Optics Group

Software Downloads

Fibre LP Mode Solver and Simulator (Matlab)

Michael Hughes, Last Updated June 2020, Actively Maintained

This library solves the eigenvalue equation for a step-index fibre under the weakly-guided, linear polarisation approximation, generating propagation constants and other parameters, including power in core, for each of the supported LP modes. (The solution is only valid for small fibre numerical apertures with step index profiles.) Mode amplitudes and intensities can be plotted, and arbitrary input fields can be coupled into the fibre, allowing the coupling efficiency and power in each mode to be calculated. The fields can be propagated along an arbitrary length of fibre.

User Guide: Fibre LP Mode Solver and Simulator Readme

Download: https://uk.mathworks.com/matlabcentral/fileexchange/77497-fibre-mode-solver-and-simulator

Fibre Bundle Simulator (Matlab)

Michael Hughes, Last Updated April 2020, Actively Maintained

Fibre Bundle Simulator (Matlab) allows image acquisition through a fibre images to be simulated. The simulation does not model multimodal behaviour of the fibre cores, instead each core is modelled as a 2D intensity function such as a circle or Gaussian. The fibre bundle parameters are defined using make_bundle and the distal object is sampled using sample_with_bundle. An image of the proximal face of the bundle is then obtained using project_cores. Alternatively, to quickly create an image, generate_bundle_image performs both of these functions.

User Guide: Fibre Bundle Simulator Notes

Download: https://uk.mathworks.com/matlabcentral/fileexchange/75157-fibre-bundle-simulator

Fibre Bundle Core Removal by Interpolation (Matlab)

Michael Hughes, Last Updated April 2020, Actively Maintained

Removes core pattern in fibre bundle images by triangular linear interpolation. Calibration requires identifying location of each core, and so all images must be clearly resolved. Method is slower than simple spatial filtering but can deal better with broken cores or more complex reconstruction schemes (super-resolution etc.). It also may work better for coherent imaging where simple filtering does not preserve integrated intensity for each core.

User Guide: Bundle Image Interpolation Notes

Download: https://uk.mathworks.com/matlabcentral/fileexchange/75248-fibre-bundle-image-processing-core-removal-matlab

Fibre Bundle Inline Holography (Matlab)

Michael Hughes, Last Updated June 2020, Permanently Archived

This figshare collection from our paper on inline holographic microscopy through fibre imaging bundles contains MATLAB code and example data for pre-processing and numerical refocusing of inline holograms captured through a fibre imaging bundle. Please see the paper on Arxiv or in Applied Optics for full details.

Download: https://doi.org/10.6084/m9.figshare.c.5029235.v1


LightCrafter 3000 Interface (Matlab)

Michael Hughes, Updated 2018, Actively Maintained

DLPMat provides a Matlab class with methods for interacting with the Texas Instruments LightCrafter DLP. It has been tested with a device using the DM365 Controller. As of the current version, most (but not all) write commands are implemented, but no read commands are implemented. Communications are via a TCP/IP interface. Please consult the DM365 Command Interface Guide for general information about controlling the LightCrafter and a full list of commands.

User Guide: DLPMat User Guide

Download: https://uk.mathworks.com/matlabcentral/fileexchange/75237-lightcrafter-interface-matlab

Dynalog File Analyser (Matlab)

Michael Hughes, Last Updated 2011, Not Maintained

A set of functions for Octave/Matlab (developed for Octave v3.2.4, but should run under Matlab with minimal modification.) They can be used to interrogate dynalog files generated by the Varian Clinac 4D Radiotherapy Treatment System and generate, among other things, fluence maps. The functions were written as part of a project on quality assurance in 2011 and may not function with more up-to-date systems. There is no GUI, the user will require a working knowledge of matlab/octave and a general understanding of dynalog files. For applications, see how the code has been used in several third-party publications such as “Evaluation of MLC leaf positioning accuracy for static and dynamic IMRT treatments using DAVID in vivo dosimetric system” and “Using Bespoke Matlab Software for the Collection and Processing of Dynalog Files from the Varian Millennium 120 MLC system following delivery of Intensity Modulated Fields“. ┬áNo further updates are planned.

User Guide: Dynalog File Analyser User Notes

Download: https://uk.mathworks.com/matlabcentral/fileexchange/75236-dynalog-file-analyser