In-Space Distributed Fiber Optic Hydrogen Leak Sensor, Phase I

Broadband Photonics Inc. proposes development of a patent-pending distributed fiber optic sensor for in-space hydrogen leak detection. Reliable and fast detection of hydrogen leaks is critical to both operational safety and maintenance of propellant quantities for in-space hydrogen systems. Characteristics of the plume formed by a hydrogen leak are unpredictable in low gravity due to lack of buoyancy effects. The proposed hydrogen fiber sensor can detect any flow direction of a hydrogen leak, determine the leak location, and measure hydrogen concentration. The fiber sensor can also detect hydrogen leaks from unexpected locations in space vehicles caused by stress-induced tiny cracks or other various damages. The proposed sensor will have the same fast response speed and high sensitivity in cryogenic environments as in room temperature. Furthermore, the proposed fiber sensor offers several significant advantages, including reconfigurable, lightweight, one feed-through, easy installation, easy maintenance, and capability of working in radiation harsh environments. In Phase 1, feasibility work will be performed. In Phase 2, prototypes of the proposed hydrogen fiber sensor will be produced for field trial and be prepared for commercialization in Phase 3.

This is a mature technology (TRL 7+) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.

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