NONRECIPROCITY IN INTEGRATED OPTICAL AND MICROWAVE OPTOMECHANICAL BASED SYSTEMS
Abstract
Nonreciprocal devices, i.e. devices that do not exhibit the same behavior if input and output are reversed, such as isolators, circulators or gyrators, play a key role in modern transmission technologies, ranging from Radar, wireless transmission to optical networks and are ubiquitous in our information society. Isolators protect lasers from back reflections, or qubits from microwave noise, while circulators are used to ensure that outgoing Radar signals do not interfere with return signals. Commercial technologies in both the microwave and the optical domain are based on magnetic fields and ferrite materials. These devices are bulky, create stray magnetic fields and are not amenable to chip integration. Recent theoretical advances1–3 have led to new approaches to non-reciprocity that allow on chip integration, re-configurability and magnetic field free operation, which are based on time modulation, as well as on advances that use optomechanics4–9, i.e. the radiation pressure coupling of light and mechanical motion. In this proposal we will implement, a microwave circulator that using superconducting microwave-optomechanical systems7,9. In addition, we will implement an optical nanophotonic on chip isolator, based on periodic time modulation, as recently proposed by S. Fan10 in an ultra low loss platform based on Si3N4. Taken together our proposal will advance both microwave and optical devices that achieve non-reciprocity in a compact, on chip and reconfigurable manner.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 11, 2021
- Source ID
- FA86552017009
Entities
People
- Tobias Kippenberg
Organizations
- Air Force Office of Scientific Research
- Swiss Federal Institute of Technology in Lausanne
- United States Air Force