Optics11 Raises €50 Million for Fibre Sensing

Optics11 Staff, Optics11
November 9, 2026

Optics11 announced €50 million in follow-on equity funding on November 9, 2026, bringing its total investment to more than €100 million over 15 months. Existing investors FORWARD.one, Value Creation Capital, SET Ventures, and JOIN Capital participated in the round. The company plans to use the money to expand manufacturing, strengthen operations, grow internationally, and deliver its sensing technology to more customers and partners. For the subsea sector, the announcement concerns greater capacity to supply monitoring equipment, rather than a newly awarded cable protection project.

The company's technology uses light traveling through optical fiber to pick up very small acoustic signals. The sensing point does not need powered electronics, and the passive approach is silent and resistant to electromagnetic interference. Those characteristics matter when considering equipment for monitoring underwater activity. Optics11's static seabed system, OptiBarrier, is marketed for ports, offshore infrastructure, and subsea cables. The company claims it can detect and classify targets at distances of up to 100 kilometers from shore. The release does not tie that claimed range to a new telecom cable deployment.

A separate product, OptiArray, is a mobile sensing array designed to be towed. Earlier in 2026, the Dutch Ministry of Defence selected a containerized version for its ASWINABO program. That selection provides a concrete example of defense interest in the company's technology, but it should not be confused with an order to monitor a telecommunications cable. Together, the stationary and mobile products show how fiber-optic sensing can serve different monitoring roles, from fixed seabed observation to equipment that moves with a towing platform.

The funding is significant for cable operators because it supports the supply side of underwater monitoring: the ability to manufacture systems, support international operations, and serve additional customers. It does not, by itself, establish where those systems will be installed or when they will enter service. The confirmed position is that Optics11 is scaling production and its international business. The release names no new telecom subsea cable customer award and gives no new deployment date for that market.

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