Internship | Turbulence-Resilient Laser Communication Links

In this project, you will advance the field of laser satellite communication by exploring spatial diversity techniques to mitigate the impact of atmospheric turbulence on the quality of free space optical links. Your tasks will support the development of future technological advancements in the field, including application of photonic integrated circuits—an innovative step toward more resilient, high-speed global connectivity.

As an intern, you will be responsible for setting up and performing optical measurements to assess how effectively multiple simultaneous laser beams can improve link quality in the presence of atmospheric turbulence. The experiments will combine fiber optics and free-space propagation to simulate realistic conditions and analyze how spatial diversity helps prevent deep signal fades—instances where turbulence causes the signal from a single beam to drop below detection thresholds. The use of coherent modulation formats like QPSK adds complexity, requiring careful management of interference effects while maintaining phase coherence across beams. This work serves as a critical proof-of-concept to evaluate the practical benefits of spatial diversity in optical links.

You’ll be part of a multidisciplinary team within the Optics department at TNO, working closely with colleagues working on laser communication projects. The team brings together expertise in optics, photonics, telecommunications, and electronics, creating a collaborative environment for a systematic approach to tackle complex challenges. The insights gained during this phase will help guide the development of compact, scalable solutions for next-generation wireless communication systems.

The ideal candidate is curious, hands-on, and eager to contribute to experimental research in a collaborative, multidisciplinary environment. They are proactive in solving technical challenges, communicate clearly, and are comfortable working both independently and as part of a team. A structured approach to performing experiments, documenting results and a willingness to learn are essential.

• A bachelor’s or master’s degree (HBO/WO) in physics, electrical engineering, photonics, or a related field
• Experience with optical measurements and working in a lab environment
• Some experience with advanced fiber processing techniques (e.g., splicing, dicing, …)
• Understanding of optical interference phenomena, especially in free-space setups
• Some operational knowledge of telecom electronics is an added plus

You want an internship opportunity on the precursor of your career; an internship gives you an opportunity to take a good look at your prospective future employer. TNO goes a step further. It’s not just looking that interests us; you and your knowledge are essential to our innovation. That’s why we attach a great deal of value to your personal and professional development. You will, of course, be properly supervised during your work placement and be given the scope for you to get the best out of yourself. Furthermore, we provide:

• A highly professional, innovative internship environment, within a team of top experts.
• A suitable internship allowance (615 euro for wo-, hbo- and mbo-students, for a full-time internship).
• Possibility of eight hours of free leave per internship month (for a full-time internship).
• A free membership of Jong TNO, where you can meet other TNO professionals and join several activities, such as sports activities, (work-related) courses or the yearly ski-trip.
• Use of a laptop.
• An allowance for travel expenses in case you don’t receive an OV-card.

At TNO, we innovate for a healthier, safer and more sustainable life. And for a strong economy. Since 1932, we have been making knowledge and technology available for the common good. We find each other in wonder and ingenuity. We are driven to push boundaries. There is all the space and support for your talent and ambition. You work with people who will challenge you: who inspire you and want to learn from you. Our state-of-the-art facilities are there to realize your vision. What you do at TNO matters: impact makes the difference. Because with every innovation you contribute to tomorrow’s world. Read more about TNO as an employer.

At TNO we encourage an inclusive work environment, where you can be yourself. Whatever your story and whatever unique qualities you bring to the table. It is by combining our unique strengths and perspectives that we are able to develop innovations that make a real difference in society. Want to know more? Read what steps we are taking in the area of diversity, equity and inclusion.

After the first CV selection, the application process will be conducted by the concerning department. TNO will provide a suitable internship agreement. If you have any questions about this vacancy, you can contact the contact person mentioned below.

Important to be aware of before applying:

• Before the start of the internship, the internship agreement from TNO needs to be signed. For students at a college or university based in the Netherlands, TNO uses the UNL-template (supplemented with a number of specific agreements from TNO). For students of foreign and MBO educational institutions, the TNO internship agreement applies. TNO does not sign any other internship agreements.
• Before the start of the internship, the educational institution will need to confirm in writing that:
  • 1) you are enrolled at the educational institution during the internship, and;
  • 2) the internship takes place as part of the programme of the study.
• The confirmation of educational institution takes place by signing the UNL template or forms prepared by TNO.
• Interns at TNO must be in possession of a Dutch residential address at the start of the internship. Performance of internship activities from abroad is not possible.