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OptiLayer:  Your Partner in Design and Post-Production Characterization of Optical Coatings


All OptiRE options have been carefully tested on the sets of real measurement data. Results of out studies as well as methodology of the reverse engineering are published in our papers.

Random Errors

Random Errors mode performs a search for random errors in layer thickness. This search is a multiparametric inverse problem which solution may be unstable and non-unique.

One of the ways to overcome the ambiguity of the reverse engineering results is to involve more input experimental data, for example, multi-scan measurements.

Random errors model assumes that different errors in coating layers. In this case the model coating is described by the vector \(X\):

\[ X=(d_1+\delta_1,...,d_m+\delta_m), \]

where \(d_1,...,d_m\) thicknesses of design layers, \(\delta_1,...,\delta_m\) absolute errors in layer thicknesses.



optical characterization Initial fitting and final fitting after application of random errors model (put the mouse on and out of the picture).

 Random errors algorithm is base on the minimization of the discrepancy function with respect to errors in layer thicknesses:

\[ DF=DF(\delta_1,...,\delta_m)\rightarrow \min \]

In Random Errors Setup you can specify the upper boundaries of the errors. You can also specify what errors you are searching for (Active column).


RandomErr Settings1
error in layer thicknesses

The mathematical algorithms of OptiRE help you to overcome the problems connected with the instability and non-uniqueness of reverse engineering solutions. 

Reverse engineering methodology is carefully studied in our publications.

Application of this option is demonstrated and discussed in our publications:

  1. T. Amotchkina, M. Trubetskov, V. Pervak, B. Romanov, and A. Tikhonravov, "On the reliability of reverse engineering results," Appl. Opt. 51, 5543-5551 (2012).
  2. T.V. Amotchkina, M.K. Trubetskov, V. Pervak, S.Schlichting, H. Ehlers, D. Ristau, and A.V. Tikhonravov. "Comparison of algorithms used for optical characterization of multilayer optical coatings." Appl. Opt. 50, 3389-3395 (2011).
  3. A. Tikhonravov, T. Amotchkina, M. Trubetskov, R. Francis, V. Janicki, J. Sancho-Parramon, H. Zorc, and V. Pervak. "Optical characterization and reverse engineering based on multiangle spectroscopy." Appl. Opt. 51, 245-254 (2012).

Easy to start

Icons 100x100 1OptiLayer provides user-friendly interface and a variety of examples allowing even a beginner to effectively start to design and characterize optical coatings.        Read more...

Docs / Support

Icons 100x100 2Comprehensive manual in PDF format and e-mail support help you at each step of your work with OptiLayer.



Icons 100x100 3If you are already an experienced user, OptiLayer gives your almost unlimited opportunities in solving all problems arising in design-production chain. Visit our publications page and challenge page.


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