REVISED MURI - Fundamental Studies and Applications of Spin-Orbit Interactions of Light
Abstract
Revised Statement of WorkStatement of WorkFundamental studies and applications of spin-orbit interactions of lightYear 1:Fiber-OAM Experiments (BU lead) Design, fabricate and validate fibers, based on spin-orbit interaction principles, to surpass themode count achieved in a single fiber, to date. Characterize its linear and nonlinear properties. Demonstrate modulated data and OAM transfer between wavelengths and modes, pursuant togoal of high-power blue light in tunable OAM modes.Metasurface-based modal control (Harvard lead) Integrate the SAM-OAM multiplexer and sorter to show the 1st high purity and ultracompactfree-space communication system utilizing SAM, OAM, and wavelength degrees-of-freedom. Combine the OAM-SAM (de)multiplexers with vortex fibers to report the most compact anddense fiber-based communications system, to-date.Theory of OAM propagation in fibers (Stanford lead) Develop scattering theory for topological transformations in fibers and metasurfaces.Year 2:Fiber-OAM Experiments (BU lead) Develop laws for nonlinear selectivity based on angular momentum selection rules. Experimentally demonstrate > 10dB suppression of Raman scattering threshold for opticallyactive, as opposed to singlet, OAM fiber modes.Metasurface-based modal control (Harvard lead) Reach a feature size of 1 m for the transparent electrodes on the OAM (de-)modulator. Introduce a design strategy for a new generation of space dependent spin-orbit couplers thatcan map an incident polarization state to vortex beams with spatially dependent OAM.Theory of OAM propagation in fibers (Stanford lead) Establish application-specific metrics for robustness as guidance for principal mode design.Year 3:Fiber-OAM Experiments (BU lead) Demonstrate the first Raman suppression during photon-pair generation with fibers. Demonstrate the first nonlinear modal switching network functionality.Metasurface-based modal control (Harvard lead) Generate a superposition of helical beams modulated at MHz speeds. Demonstrate OAM transceiver with tunability over 20 OAM channels.Theory of OAM propagation in fibers (Stanford lead) Develop theory of SBS suppression due to angular momentum selectivity. Develop robustness criteria for light scattering and guidance in micro-structured fibers.Year 4:Fiber-OAM Experiments (BU lead) Demonstrate >10kW peak power blue OAM source; conduct systems tests with water tank. Demonstrate the proof-of-concept of the first SBS suppressed power-scalable fiber laser. Demonstrate the first noise-free quantum entangled and heralded fiber source.Metasurface-based modal control (Harvard lead) Demonstrate spatiotemporal control of OAM modes using static/active metasurfaces. Demonstrate active switching of spatial modes to surmount impending capacity crunches intelecom links, network topologies, and data centers.Theory of OAM propagation in fibers (Stanford lead) Determine the possible existence of the topological invariants guiding the propagation of lightthrough temporally fluctuating systems.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jun 17, 2020
- Source ID
- N000142012450
Entities
People
- Siddharth Ramachandran
Organizations
- Boston University
- Office of Naval Research
- United States Navy