Internship Mechanical Engineering | Fiber Collimator Design Optimization
nts
Nijmegen, Gelderland, Netherlands · Nijmegen · Netherlands
Posted Jun 29, 2026
- Internship
- On-site
- NTS Optel
- student_college
nts
Nijmegen, Gelderland, Netherlands · Nijmegen · Netherlands
Posted Jun 29, 2026
At NTS, we make it possible together. Technology inspires and drives us; it is our passion. Every day, we work on unique solutions for complex challenges. Whether it's ultra-complex or ultra-precise solutions, we are proud of what we do and deliver. Do you want to discover what is possible together? Are you a Mechanical Engineering student who enjoys solving technical challenges and improving real products, looking for a company where you will have the freedom and right guidance? Choose an internship at NTS Optel and let's make it possible together.
In optics, we frequently need one-time manual adjustments that need to be:
Precise (e.g. positioning sub-micron, tilt µrad)
Lockable without change of setting
Robust against mechanical and temperature shocks
Often we use off-the-shelf solutions that only meet some of these requirements. Sometimes we copy elements of existing designs, which often results in worse performance, as we did not have or take the time to analyze and improve/iterate the way OEM suppliers could.
Sometimes we need many degrees of freedom on one element with limited space available. Preferably, we would like to have these adjustments independent, which makes it even more complex.
An example of such a challenge is a fiber collimator. Here we need at least independent focus (z) and positioning (x, y) of the collimator lens with respect to the fiber tip. Commercial solutions are available, but they are not that great. For example: Thorlabs – FiberPort Collimators / Couplers.
In that solution, lens focus, tilt, and a small shift are all combined in the 3 z-adjusters. This is a nightmare to adjust. The locking mechanism is simply a counter nut on the adjustment screw, so you are dependent on the springs to keep everything in place. Tightening these counter nuts also causes the adjustment to go off.
Assignment
A previous intern designed a fiber collimator that has already been manufactured and is being tested during a second internship. The first prototype provided valuable insights, and several improvement opportunities have been identified.
Your challenge will be to develop the next-generation fiber collimator design and help create a better, more robust, and cost-effective solution. You will investigate current limitations, identify root causes, and translate your findings into practical design improvements.
What will you do?
Analyze the current design and test results
Investigate technical challenges and improvement opportunities
Apply structured problem-solving methods
Develop and evaluate new mechanical design concepts
Transfer the concept into a detailed design (incl. drawings)
Work together with experienced optical and mechanical engineers
If time permits:
Support the manufacturing of parts and the build of a prototype
Set up a design validation plan and execute it
You are an HBO or WO Mechanical Engineering student who:
Likes solving technical problems
Works in a structured and analytical way
Is interested in precision mechanics and product development
Experience with CAD-programs, preferable with NX
Compensation of €500 per month
Travel allowance of €0.21 per km
Free fruit at work
A challenging and practical internship assignment
Experience in a high-tech engineering environment
Professional guidance from experienced engineers
The opportunity to make a real contribution to an existing product
We provide unique solutions for complex challenges and drive the technological progress of our customers. By combining development, production, and assembly, we play an integral role in bringing together the supply chain. We combine the best skills and smartest ideas into a working system for the most advanced semiconductor, opto-mechatronic, and analytical solutions in the world. That is why we have grown into a Tier-1 supplier for OEMs and an international player operating from various locations in Europe, Asia, and the US.
While we offer our teams a great workplace all over the world, we do not forget to remain firmly rooted locally. Ultimately, the core of NTS is formed by our people. Their excellent craftsmanship, customer-oriented mentality, and clear technical solutions have made NTS what it is today. Together, we create a culture that everyone can be proud of, because we make it possible together. That is why we seize every opportunity to celebrate our people, our craftsmanship, and our successes.
Apply directly and send your CV and motivation letter via the application button below! For more information about this vacancy or our organization, you can contact Amruta Bhargava – TA Business Partner at amruta.bhargava@nts-group.nl