Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 38,
  • Issue 7,
  • pp. 2022-2027
  • (2020)

Scattering Metal Waveguide Based Speckle-Enhanced Prism Spectrometry

Not Accessible

Your library or personal account may give you access


We present an optical efficiency improved speckle spectrometer where a scattering metal wave-guide is utilized along with a conventional prism spectrometer. We conducted extensive tests on 25 different scatterers, involving a variety of nanoparticle concentrations, scattering layer thicknesses, and wave-guide vs. non-guiding type scatterers. We observed 35 pm spectral resolution at 1.3% optical efficiency, which we could only achieve with ∼0.01% optical efficiency using a conventional non-guiding scatterer. Thus our new implementation provides up to two orders of magnitude improvement in optical efficiency at the same spectral resolution, as opposed to scatterers that are not sandwiched between metal plates. The improvement in optical efficiency allows for rapid (∼5 μsec exposure) acquisition of the spectrum with a conventional CMOS camera. Thanks to its excellent spectral resolution and diminished optical losses, the proposed spectrometer could be utilized in high frame-rate, real time spectrum reconstruction applications, such as Optical Coherence Tomography.

PDF Article
More Like This
Cavity-enhanced scalable integrated temporal random-speckle spectrometry

Hongnan Xu, Yue Qin, Gaolei Hu, and Hon Ki Tsang
Optica 10(9) 1177-1188 (2023)

Wavemeter based on dispersion and speckle in a tapered hollow waveguide

G. J. Hornig, T. R. Harrison, L. Bu, S. Azmayesh-Fard, and R. G. Decorby
OSA Continuum 2(2) 495-506 (2019)

Enhancing speckle statistics for imaging inside scattering media

Wei-Yu Chen, Matthew O’Toole, Aswin C. Sankaranarayanan, and Anat Levin
Optica 9(12) 1408-1416 (2022)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
Login to access Optica Member Subscription

Select as filters

Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved