Non-Magnetic On-Chip Resonant Acousto-Optic isolator at 780nm
Abstract
Title Non-Magnetic On-Chip Resonant Acousto-Optic Isolator at 780 nm PI Dr. Gaurav Bahl, Assistant Professor Department of Mechanical Science and Engineering 1206 W. Green St.; Urbana, Illinois 61801 Email: bahl@illinois.edu The goal of this project is to demonstrate the feasibility of a new magnet-free chip-scale optical isolator operating at 780 nm wavelength. This will be achieved by means of nonreciprocal Brillouin Scattering Induced Transparency (BSIT), a mechanism that exhibits high-efficiency direction-selective coupling between light and sound waves. Optical transmission through a waveguide coupled to a BSIT-supporting whispering gallery resonator (WGR) will be nearly lossless in the forward direction but strongly absorbing in the backward direction. The research team will fabricate BSIT-WGR systems operating at 780 nm using a new opto-mechanical resonator design. Through this isolator, the aim is to ensure that light propagating one way experiences <1 dB loss, while light propagating the opposite direction experiences >30 dB loss. The RF electronic input to this system should not exceed 10 dBm and it is desired to have optical power handling of 25 mW. The proposed isolator is a key enabling solution for cold-atom microsystems, chip-scale atomic clocks, and magneto-optical traps. Thus, it addresses significant DoD interests in positioning, navigation, and timing (PNT).
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 19, 2016
- Source ID
- FA94531610025
Entities
People
- Gaurav Bahl
Organizations
- Air Force Research Laboratory
- United States Air Force
- University of Illinois Urbana–Champaign