How OPTICS11’s OTADES Transforms the Capabilities of XLUUVs


In today’s challenging underwater landscapes, the need for advanced sensing technologies that meet the demands of Extra Large Unmanned Underwater Vehicles (XLUUVs) has never been greater. In response to this, OPTICS11 has developed a revolutionary solution that stands at the intersection of innovative optical fiber technology and rigorous engineering: the Optical Thin Array Detection System (OTADES).

The Unique Challenges of XLUUVs

XLUUVs are state-of-the-art subsea vessels designed to navigate autonomously through vast and often hazardous underwater environments. These unmanned systems are frequently tasked with extended missions and operations in challenging conditions, making robust, compact, and highly sensitive sensing capabilities an essential requirement.

Previously, XLUUVs have been limited by the constraints of traditional electric sensors, such as sensitivity, size, weight, power consumption, sensor capacity, and the complexity of their designs. The need for a new generation of sensors that overcome these challenges is evident, and it’s here that OTADES comes into play.

Introducing OTADES: Revolutionizing Underwater Sensing

OPTICS11’s OTADES is a comprehensive all-optical towed array solution that addresses the unique demands of XLUUVs. It represents a pioneering approach to underwater acoustic sensing, offering high sensitivity, minimal weight, compact size, and low power usage. This innovative system uses miniaturized mandrels wrapped with optical fibers to deliver exceptional sensitivity.

One of the groundbreaking features of the OTADES system is the use of optic-fiber sensors, which provide several key advantages over traditional electric sensors:

  1. Extended Range & Scalability: No power increase is needed for the addition of extra hydrophones.
  2. Durability: The system is resistant to corrosive liquids and short circuits, crucial for enduring the harsh marine environment.
  3. EMI & EMC Immunity: Reliable performance is ensured without interference, essential for accurate data collection.
  4. Compact & Lightweight: This feature makes it ideal for integration with XLUUVs.
  5. Simple & Robust: Low part count and straightforward design reduce the chances of failure and simplify maintenance.

Why OTADES is the Perfect Fit for XLUUVs

Compactness and Light Weight

The reduced size and weight of the OTADES system make it a suitable solution for XLUUVs, which require compact, lightweight technologies to maximize operational efficiency and maneuverability.

Enhanced Performance

The system provides heightened sensitivity to deformation, capable of detecting the slightest strain down to femtometer levels induced by acoustic waves. This feature is crucial in the detection and tracking of subtle acoustic events, a common mission profile for XLUUVs.

Energy Efficiency

With no power increase needed for additional hydrophones, the OTADES system is energy-efficient, a critical aspect for XLUUVs which often have to operate on extended missions and rely on efficient energy usage.

Comprehensive Sensing

The optic-fiber sensors of the OTADES system can measure acoustic, temperature, and pressure signals, ensuring a comprehensive sensing solution that can offer a detailed understanding of the underwater environment in which XLUUVs operate.

In conclusion, OPTICS11’s OTADES technology marks a significant step forward in subsea acoustic sensing. The inherent advantages it offers make it a compelling solution for the future of XLUUVs and the broader field of underwater defense. By leveraging these cutting-edge technologies, OPTICS11 continues to empower the defense industry, providing them with the necessary tools to protect their assets in the most challenging environments.

Greater Safety and Operational Effectiveness

The robust design of the OTADES system, immune to corrosive liquids and short circuits, ensures durability under harsh conditions. Moreover, it has immunity to electromagnetic interference (EMI) and electromagnetic compatibility (EMC), assuring reliable performance without interference. This provides an added layer of safety and operational effectiveness for XLUUVs, which often operate in environments with various natural and man-made electromagnetic sources.

Versatility and Scalability

The OTADES system’s versatility is another distinct advantage for XLUUVs. With the capacity to host up to hundreds of built-to-spec hydrophones, it offers a scalable solution that can be tailored to suit various mission requirements. Furthermore, the system’s compatibility with any underwater platform expands the operational horizons of XLUUVs.

The Future with OTADES and XLUUVs

In the evolving landscape of underwater exploration and defense, the collaboration of technologies like XLUUVs and OTADES presents exciting possibilities. The ability of XLUUVs to undertake extended missions, combined with the enhanced sensing capabilities of the OTADES system, could revolutionize how we conduct underwater research, resource exploration, and defense operations.

As a global leader in advanced fiber optic sensing systems, OPTICS11 continues to shape the future of underwater acoustics, non-destructive testing research, and energy asset protection. By integrating OTADES with XLUUVs, we can expect to see significant advancements in the underwater defense industry, safeguarding offshore assets, and aiding data-driven decision-making.

The development of the OTADES system by OPTICS11 is a testament to the continuous innovation within the field of fiber optic sensing technologies. And, by combining this cutting-edge technology with the extraordinary capabilities of XLUUVs, we are not just envisioning the future of underwater defense, but actively constructing it.

For more information about how OTADES can benefit your XLUUV operations or to discuss any custom requirements, please contact us via email at

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