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News Archives

Programming C# Modules

[December 19, 2018]


The customization potential of the optical modeling and design software VirtualLab Fusion is nowhere more evident than in the modules. While most other programmable items in the software present the logical constraint of pre-defined inputs and outputs, the modules (be they coded in C# or Visual Basic) offer the user total freedom of implementation. Below, we present an in-depth tutorial describing the basic workflow ...

[December 19, 2018]


The customization potential of the optical modeling and design software VirtualLab Fusion is nowhere more evident than in the modules. While most other programmable items in the software present the logical constraint of pre-defined inputs and outputs, the modules (be they coded in C# or Visual Basic) offer the user total freedom of implementation. Below, we present an in-depth tutorial describing the basic workflow for how to program and use your own modules, with a simple example given in detail as illustration. We include a second, more advanced example in a more condensed format.

How to Work with the C# Module and Example
Learn how to program and work with your own custom C# modules in VirtualLab Fusion with this detailed tutorial.

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Programming a Module that Smooths the Edges of a Structure
This C# module has the very specific purpose of being used for a tolerance analysis of fabrication errors: taking as input the designed profile of a diffractive element, it rounds off the ideally sharp edges to attain a more realistic configuration.

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Fiber-Coupling Lens Design and Tolerance Analysis

[December 06, 2018]


In many fiber-optics systems, a customized design of the coupling lens is often required so as to achieve a good fit with the given input field and working distance. VirtualLab provides not only the tools for the analysis of fiber-coupling efficiency, with the in-built Parametric Optimization function, but also enables an efficient design of the coupling lenses. In fiber optics, it is also known that coupling ...

[December 06, 2018]


In many fiber-optics systems, a customized design of the coupling lens is often required so as to achieve a good fit with the given input field and working distance. VirtualLab provides not only the tools for the analysis of fiber-coupling efficiency, with the in-built Parametric Optimization function, but also enables an efficient design of the coupling lenses. In fiber optics, it is also known that coupling efficiency may be sensitive to e.g. misalignment of the components in the system. With the Parameter Run in VirtualLab, one can conveniently perform a tolerance analysis of such fiber-coupling systems and investigate the influence of different parameters.

Parametric Optimization of Fiber-Coupling Lenses
We present the design of a fiber-coupling lens with conical surface, for the purpose of efficient light coupling into a single-mode fiber, using parametric optimization in VirtualLab Fusion.

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Tolerance Analysis of a Fiber-Coupling Setup
In a fiber-coupling optical setup, the coupling efficiency is analyzed with respect to different tolerance factors like the shift of the position of the fiber end and the tilt of lens.

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Programming Custom Detectors

[December 04, 2018]


In some of our previous newsletters we already spoke of the potential for customization via programming, which is characteristic of the optical modeling and design software VirtualLab Fusion. In the current newsletter we present another programmable element: detectors. Full accessibility to the vectorial electromagnetic field, paired with the customizability, further increases versatility, facilitating the ...

[December 04, 2018]


In some of our previous newsletters we already spoke of the potential for customization via programming, which is characteristic of the optical modeling and design software VirtualLab Fusion. In the current newsletter we present another programmable element: detectors. Full accessibility to the vectorial electromagnetic field, paired with the customizability, further increases versatility, facilitating the implementation of any detector function. Find below two documents that illustrate how to work with the Programmable Detector in VirtualLab Fusion: a detailed tutorial and an additional example in a more condensed format.

How to Work with the Programmable Detector and Example
Follow this step-by-step tutorial on how to work with the Programmable Detector in VirtualLab Fusion to learn how to program your own custom detectors!

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Programming a Degree of Coherence Detector
The custom detector presented in this example computes the complex degree of coherence between two different points in the detector plane.

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Performance Evaluation of Fiber-Coupling Systems

[November 29, 2018]


Optical fibers are widely used in different applications; single-mode fibers especially play an important role in long-distance communications. Launching light into single-mode fibers can be a challenging task in practice. VirtualLab Fusion enables fast evaluation of fiber-coupling systems thanks to the physical-optics-based simulation techniques, fiber-related detectors, and many other helpful tools. For example, ...

[November 29, 2018]


Optical fibers are widely used in different applications; single-mode fibers especially play an important role in long-distance communications. Launching light into single-mode fibers can be a challenging task in practice. VirtualLab Fusion enables fast evaluation of fiber-coupling systems thanks to the physical-optics-based simulation techniques, fiber-related detectors, and many other helpful tools. For example, one can find the optimal working distance for coupling light into single-mode fibers, and compare the performance of different coupling lenses.

Optimal Working Distance for Coupling Light into Single-Mode Fibers
In this example, we select one commercially available lens and show how to find the optimal working distance to obtain maximum fiber-coupling efficiency using field tracing.

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Comparison of Different Lenses for Fiber-Coupling
For the task of coupling light into a single-mode fiber, two commercially available lenses are selected and their performance is evaluated using the overlap integral.

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LightTrans awarded with i-work-Business Award 2018

[November 28, 2018]

The LightTrans International UG has been awarded with the “i-work Business Award” in the category “SME - small and medium-sized enterprises” on 27 November 2018 in Jena, Germany. LightTrans employs 25 employees, thereof 40 percent are international specialists originated from 8 different countries. This international workforce results in intercultural opening and collaboration in the company.

We are an ...

[November 28, 2018]

The LightTrans International UG has been awarded with the “i-work Business Award” in the category “SME - small and medium-sized enterprises” on 27 November 2018 in Jena, Germany. LightTrans employs 25 employees, thereof 40 percent are international specialists originated from 8 different countries. This international workforce results in intercultural opening and collaboration in the company.

We are an internationally oriented company with heart and soul. With our efforts and experiences, we aim to increase the visibleness of the topics integration in the corporate landscape of Jena and its region.”, emphasizes Petra Wyrowski, co-founder and shareholder.

The jury of the award for intercultural diversity in Jena was convinced by LightTrans’ extensive company concept. International employees are not only supported during their starting time in Germany, e.g. administrative matters or their apartment search. Especially the togetherness in LightTrans’ working life is focused on cultural diversity: in the office speaking German and English is a matter of course. Experiencing time together, like corporate excursions, taking part in sporting events or games night complement the concept. Additionally an intensive cooperation with the “Abbe School of Photonics” -  an optical and photonics oriented education program at Friedrich-Schiller-Universität Jena addresses international students already in the academic environment.

We value the versatile cultural influences and perspectives of our international specialists, who clearly improve and promote our work and company.” Adds Michael Höschel, Managing Director of LightTrans.

i-work Business Award

The i-work Business Award is awarded by the Business Development Agency Jena and the prestigious Friedrich Schiller University Jena under the patronage of employment minister Heike Werner. The award honors companies which promote intercultural opening for international professionals exemplary. The i-work is part of the project „HiTh–Hochqualifiziert. International. Thüringen.“ supporting international concepts of companies in Jena and its region.

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Focal Region Investigation

[November 20, 2018]


Among the various types of optical components, lenses are probably the most widely used and focusing is possibly the most typical task. Although it might seem trivial, the behavior of light in focal regions can be complex and thus deserving of in-depth investigation. As an example, in the case of focusing with a high-NA objective lens, the focal spot is well known to show asymmetry, and consideration of the ...

[November 20, 2018]


Among the various types of optical components, lenses are probably the most widely used and focusing is possibly the most typical task. Although it might seem trivial, the behavior of light in focal regions can be complex and thus deserving of in-depth investigation. As an example, in the case of focusing with a high-NA objective lens, the focal spot is well known to show asymmetry, and consideration of the vectorial nature of light turns out to be necessary. In VirtualLab, the properties of light in focal region can be thoroughly investigated with the help of different kinds of detectors, and with the ParameterRun function the field evolution through the focal region can be analyzed as well.

Analyzing High-NA Objective Lens Focusing
High-NA objective lenses are widely used in optical lithography, microscopy, etc. Consideration of the vectorial nature of light in the simulation of the focusing is of great importance.

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Focus Investigation behind Aspherical Lens
A laser diode with asymmetric divergence and astigmatism is first collimated and then focused. Evolution of the field in the focal region is investigated in detail.

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Programming Custom Sources

[November 09, 2018]


Sources are yet another extensively customizable module in VirtualLab Fusion: you can adjust at will their wavelength spectrum, spatial coherence properties, transversal shape, and polarization, among others. Of all those, let us at present concentrate on the last two. You can find below a thorough tutorial on the Programmable Light source (which includes a detailed hands-on example) for you to follow, should you ...

[November 09, 2018]


Sources are yet another extensively customizable module in VirtualLab Fusion: you can adjust at will their wavelength spectrum, spatial coherence properties, transversal shape, and polarization, among others. Of all those, let us at present concentrate on the last two. You can find below a thorough tutorial on the Programmable Light source (which includes a detailed hands-on example) for you to follow, should you wish to learn to program your own sources. Additionally, we offer another example, in a more condensed format, that illustrates how to generate radially and azimuthally polarized light via programming.

How to Work with the Programmable Light Source in VirtualLab Fusion and Example (Gaussian Beam)
This tutorial will give you the instructions you need to program your own sources in VirtualLab!

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Programming Radially & Azimuthally Polarized Sources
See how to create a radially and an azimuthally polarized source, experimenting in the process with the programming of light sources and the potential of the Combined Light Source feature.

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Programming Custom Functions

[November 02, 2018]

In our previous news we already pointed to VirtualLab Fusion’s extremely modular nature, combined with its potential for customizability, as one of the fundamental strengths of the software, and went on to highlight programmable surfaces as just one instance thereof. We continue here in the same vein, only this time we move on to transmission functions: a well-known concept from Fourier optics – further enhanced by ...

[November 02, 2018]

In our previous news we already pointed to VirtualLab Fusion’s extremely modular nature, combined with its potential for customizability, as one of the fundamental strengths of the software, and went on to highlight programmable surfaces as just one instance thereof. We continue here in the same vein, only this time we move on to transmission functions: a well-known concept from Fourier optics – further enhanced by VirtualLab’s fully vectorial, electromagnetic approach – transmission functions constitute a good way to include idealized components in your optical system. Learn, with the help of the tutorial and examples listed below, how to program your own custom functions in VirtualLab!

How to Work with the Programmable Function & Example (Cylindrical Lens)
Follow the instructions of this tutorial to learn how to program custom transmission functions in VirtualLab Fusion, along the example of an idealized cylindrical lens.

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Programming an Axicon Transmission Function
Refine your VirtualLab programming knowledge with this additional example of an axicon transmission function.

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Programming Custom Surfaces

[October 23, 2018]

One of the fundamental strengths of the optical modeling and design software VirtualLab Fusion lies in its extremely modular approach: a gateway to provide maximum versatility to the user. This versatility is additionally turbocharged by the fact that many of the aforementioned modules which constitute VirtualLab allow for customization via data import or programming. In this newsletter we take a closer look at how ...

[October 23, 2018]

One of the fundamental strengths of the optical modeling and design software VirtualLab Fusion lies in its extremely modular approach: a gateway to provide maximum versatility to the user. This versatility is additionally turbocharged by the fact that many of the aforementioned modules which constitute VirtualLab allow for customization via data import or programming. In this newsletter we take a closer look at how to program custom surfaces. We present below a thorough tutorial on the topic which includes a simple example rolled out in-depth, and one additional programming sample for further illustration.

How to Work with the Programmable Interface & Example (Spherical Surface)
Learn how to program your own custom surfaces in VirtualLab Fusion along this in-depth tutorial and example.

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Programming a Sinusoidal Surface
Extend your knowledge of how to program surfaces in VirtualLab Fusion with this condensed example of a sinusoidal interface.

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Non-Paraxial Polarizer and Stokes Parameters

[October 12, 2018]

 

Polarization effects often play an important role in modern optical research and engineering due to the vectorial nature of the electromagnetic field. Linear polarizers (e.g. wire grid polarizer) are probably the most commonly used optical elements for the manipulation of the polarization state. Although in most cases polarizers are designed for paraxial situations, they are also used in non-paraxial setups, e.g. ...

[October 12, 2018]

 

Polarization effects often play an important role in modern optical research and engineering due to the vectorial nature of the electromagnetic field. Linear polarizers (e.g. wire grid polarizer) are probably the most commonly used optical elements for the manipulation of the polarization state. Although in most cases polarizers are designed for paraxial situations, they are also used in non-paraxial setups, e.g. in the focal region behind a high-NA lens or for the measurement of the Stokes parameters behind a highly tilted polarizer. In VirtualLab Fusion we provide a model for polarizers in non-paraxial cases. Moreover the simulation results obtained with VirtualLab show good agreement with the reference.

Polarizer in Focal Region
To simulate a polarizer in a non-paraxial setting, an idealized model is implemented in VirtualLab, and the effect of a polarizer in the focal region is presented.

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Stokes Parameters behind Tilted Polarizer
Using an idealized non-paraxial polarizer model, the interaction of a polarizer with incident waves from different angles is investigated, and the results are characterized by using Stokes parameters.

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