Chip-Scale Linear Non-Reciprocal Optomechanical Systems

Abstract

Time-reversal symmetry is a fundamental property of linear time-invariant media, and causes optical, electromagnetic, and acoustic systems to produce symmetric outputs between any input/output ports. However, it is necessary to break time-reversal symmetry to produce nonreciprocal behavior and to enable important devices like isolators and circulators. In the optical context, non-reciprocal behavior has been almost exclusively accomplished using magneto-optical effects. Unfortunately, this traditional approach has not been possible to implement on chip (e.g. in photonics foundries) due to the need for specialized materials and the high optical losses occurring with existing material options. Through this AFOSR Young Investigator Award we were able to study a new Brillouin scattering induced optical interference mechanism that can be efficiently used to achieve linear non-reciprocal behavior.

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Document Details

Document Type
Technical Report
Publication Date
Apr 09, 2019
Accession Number
AD1096789

Entities

People

  • Gaurav Bahl

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acoustic Waves
  • Air Force Research Laboratories
  • Bandwidth
  • Brillouin Scattering
  • Crystal Lattice Vibrations
  • Dielectrics
  • Electromagnetic Scattering
  • Frequency
  • Insertion Loss
  • Light Scattering
  • Materials
  • Optics
  • Photonics
  • Scattering
  • Scientific Research
  • Symmetry
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Integrated Circuit Design and Technology.
  • Microwave Engineering.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.