Diamond-doped fiber optic networks for persistent magnetic field sensing
Abstract
The ability to persistently monitor weak magnetic fields is a key objective in long-term maritime surveillance. One approach to meetThe ability to persistently monitor weak magnetic fields is a key objective in long-termmaritime surveillance. One approach to meeting this goal is the development of a robust optical fiber-based magnetometer network capable of underwater operation on timescalesing this goal is the development of a robustoptical fiber-based magnetometer network capable of underwater operation on timescales of years. Recently, the nitrogen-vacancy color center in diamond (NVD) has emerged asa powerful and robust quantum-limited sensor.of years. Recently, the nitrogen-vacancy color center in diamond (NVD) has emerged asa powerful and robust quantum-limited sensor. As NVD begins to be developed for commercial applications, one of the key limitations to its field deployment is the expensive and As NVD begins to be developed forcommercial applications, one of the key limitations to its field deployment is theexpensive and sensitive microscopes required to capture the signal. We have developed a novel diamond-fiber system with the potential to achieve sensitive microscopes required to capture the signal. We have developed anovel diamond-fiber system with the potential to achieve sub nanotesla per root Hertzsensitivity with readout along optical fibers. We seek the opportunity to develop thisplatform into a sub nanotesla per root Hertzsensitivity with readout along optical fibers. We seek the opportunity to develop thisplatform into a robust solution for long-term undersea magnetometry. During this ONRG-X proposal we will apply novel femto-second write techniques robust solution for long-term undersea magnetometry. During thisONRG-X proposal we will apply novel femto-second write techniques to activate NVD in conventional optical fibers and create in-fiber photonic structures to minimizescattering loss to enable long-di to activate NVDin conventional optical fibers and create in-fiber photonic structures to minimizescattering loss to enable long-distance remote monitoring. These are critical stepstowards the goal of a low-cost distributed network of NVD sensors capable of marstance remote monitoring. These are critical steps towards the goal of a low-cost distributed network of NVD sensors capable of mariine beddeployment to passively monitor the magnetic environment for timescales of yearswithout replacement. Although we are primarne bed deployment to passively monitor the magnetic environment for timescales of years without replacement. Although we are primariily focused on maritime surveillance, suchfiber optic networks may also be useful for subsurface monitoring applications over largely focused on maritime surveillance, such fiber optic networks may also be useful for subsurface monitoring applications over large areas on land.areas on land.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 11, 2020
- Source ID
- N629092012077
Entities
People
- Brant C Gibson
Organizations
- Office of Naval Research
- RMIT University
- United States Navy