Enhancing light transmission through a disordered waveguide with inhomogeneous scattering and loss
Abstract
We enhanced the total transmission of light through a disordered waveguide with spatially inhomogeneous scattering and loss by shaping the incident wavefront of a laser beam. Using an on-chip tapered lead, we were able to access all input modes in the waveguide with a spatial light modulator. The adaptive wavefront shaping resulted in selective coupling of input light to high transmission channels, which bypassed the regions of higher scattering and loss in the waveguide. Spatial inhomogeneity in scattering and loss leads to the modification of the spatial structures of transmission eigenchannels, allowing wavefront shaping to redirect the energy flux to circumvent regions of higher scattering and loss and thereby enhancing the energy transported through the system. This work demonstrates the power of wavefront shaping in coherent control of light transport in inhomogeneous scattering media, which are common in real applications.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 09, 2017
- Source ID
- 10.1063/1.4973459
Entities
People
- Alexey Yamilov
- Hui Cao
- Raktim Sarma
Organizations
- Missouri University of Science and Technology
- National Science Foundation
- Office of Naval Research
- Yale University