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


Design Contests

OptiLayer allows solving the most complicated design problems. Design contests are held in conjunction with the Optical Interference Coatings (OIC) topical meetings of OSA.

Winning designs were obtained by OptiLayer software.

  • Contest 2019 (NEW!)

Problem A requires designing a nonpolarizing beamsplitter originally considered in the frame of the contest OIC 2007. The goal of the contest is to explore whether  essential advances have been made.

Problem B requires designing a challenging light mixing system.The design problems consists of two parts, B1 and B2.

All three winning designs to the problems A, B1 and, B2 were obtained by Dr. Michael Trubetskov with the help of OptiLayer Thin Film Software.

The details are coming soon...

DesignContestPrize ProblemA

DesignContestPrize ProblemB1

DesignContestPrize ProblemB2



  • Contest 2016

The first problem was a dispersive mirror. This goal was to check the limit of available design capability and to design a dispersive mirror with as large as possible GDD in wavelength range from 700 nm to 900 nm. This is the wavelength range of Ti:Sapphire,which is widely used in femtosecond optics.

The second problem was a combination of Cissoid of Diocles [cubic plane] reflectance curves, pointing upward and downward, over the visible wavelength range. The reflectance ranges from 20% to 80% at the minimums and maximums respectively. This problem requires matching the spectral reflectance curve directly and then find the most efficient design to address a non-uniform deposition process for a series of optics in a rack.

See the details...

J. D. T. Kruschwitz, V. Pervak, J. Keck, I. Bolshakov, Z. Gerig, F. Lemarchand, K. Sato, W. Southwell, M. Sugiura, M. Trubetskov, and W. Yuan, Optical interference coating design contest 2016: a dispersive mirror and coating uniformity challenge, Appl. Optics, Vol. 56, pp. C151-C162 (2017)


Contest 2016 A1 2

OIC design contest









OIC design contest









 OIC design contest

  • Contest 2013

The design problems involved a new perspective on traditional color mirrors and a wavefront sensitive application that designers face regularly.

The first problem is a color mirror that maintains the same perceived specular reflected color, under specific illumination, for a broad range of incident angles.  Also, the color required is highly chromatic, which in some situations would fall outside of the color gamut for many naturally colored objects. Special OptiLayer options allow solving such problems. The winners of the first problem are Michael Trubetskov and Weidong Shen.

The second problem is a high performance dichroic beamsplitter for the SWIR and MWIR wavelength region that must maintain its optical flatness after coating. In addition to optical constants, Young's modulus and Poisson's ratio are provided for the candidate coating materials and the designer must select materials that allow the spectral and optical figure requirements to be met. The winner of the second problem is Michael Trubetskov. 

The detailed description of the problems, design techniques, obtained solutions will be  described in the special issue of Applied Optics.

See details:

K. Hendrix, J. D. T. Kruschwitz, J. Keck, Optical Interference Coatings Design Contest 2013: angle-independent color mirror and shortwave infrared/midwave infrared dichroic beam splitter, Appl. Optics, Vol. 53, pp. A360-A376 (2014)

OIC design contest 








OIC design contest









OIC design contest









OIC design contest

  • Contest 2010

Two design problems were considered: a high-temperature solar-selective coating, and a near to mid-infrared Fabry–Perot etalon. The winners of the first problem are Michael Trubetskov and Fabien Lemarchand (the design with the highest overall merit function, and the fewest layer/thinnest solar-selective design). The winner of the second problem is Michael Trubetskov (the thinnest Fabry–Perot etalon design with a free spectral range standard deviation of 0). The second places : Vladimir Pervak and Bill Southwel. The design techniques and design solutions are described and evaluated in the corresponding paper.

See details:

K. Hendrix, J. Oliver, Optical interference coatings design contest 2010: solar absorber and Fabry–Perot etalon, Appl. Optics, Vol. 50, pp. C286-C300 (2011)

 OIC design contest

OIC design contest









OIC design contest

  • Contest 2007

A triple bandpass filter and a nonpolarizing beam splitter were designed. The winners are Fabien Lemarchand, Michael Trubetskov and Vladimir Pervak. The details of design problems, design approaches and evaluations of solutions are published in the following paper.

See details:

M. Tilsch and K. Hendrix, Optical Interference Coatings Design Contest 2007: triple bandpass filter and nonpolarizing beam splitter, Appl. Opt. 47, C55-C69 (2008)


 OIC design contest








OIC design contest



  • Contest 2004

Design problems of a manufacturable, broadband, wide-angle antireflection coating for the visible spectral range and a minimum-shift immersed short-pass filter were solved. The winners of the first problem are Gary DeBell, Michael Trubetskov and Tatiana Amotchkina. The second problem was won by Fabien Lemaschand, Michael Trubetskov and Tatiana Amotchkina. The submitted designs are described and evaluated in the special paper.

See details:

M. Tilsch, K. Hendrix, P. Verly, Optical Interference Coatings Design Contest 2004, Appl. Optics, Vol. 45, pp. 1544-1554 (2006)

  • Contest 2001

Michael Trubetskov and Alexander Tikhonravov were among the organizers of the contest. Design problems of a gain-flattening filter (GFF) for minimum manufacturing errors and dense
wavelength-division multiplex (DWDM) filters for low group-delay GD variation were proposed. Results of the contest are given, evaluated and discussed in the corresponding paper.

See details in:

A. Thelen, M. Tilsch, A. V. Tikhonravov, M. K. Trubetskov, and U. Brauneck, Topical Meeting on Optical Interference Coatings (OIC ’2001): design contest results, Appl. Opt. 41, 3022-3038 (2002)


OptiLayer Core Expertise:

OptiLayer allows the designing of all types of multilayers in accordance with desired specifications, among them:

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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