Just came across the company Opsens trading under the symbol OPS.

https://opsens.com/

They seem to be in the same markets as Luxmux.  

Three analysts follow the company.

Not a recommendation to buy this stock (I do not own any shares of the company), just interesting to watch their revenues grow in this sector.

Opsens Company Profile

Opsens Inc provides fiber optic sensing technology. The Company operates through two segments: Medical and Industrial. In Medical segment, the Company focuses on the measure of Fractional Flow Reserve (FFR) in interventional cardiology. In Industrial segment, it develops, manufactures and installs fiber optic sensing solutions for critical applications, such as the monitoring of oil wells and other industrial applications.