Compressive ultrafast optical time-stretch imaging

Amir Matin, Xu Wang*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


Optical time-stretch imaging is a novel ultrafast imaging technique that is based on space-to-time-to-wavelength mapping and enables ultrafast phenomena to be captured at GHz scan rate. In the conventional high-speed imaging systems, the maximum scan rate is limited by the sampling rate of the digitizer and the temporal dispersion in the fibre to avoid data blending. Therefore the trade-off between high imaging speed and high spatial resolution remains a the bottleneck in these imaging systems. We address these limitations by applying optical encoding on the data that allows the overlapping between the adjacent pulses. The heavily compressed observed data are then reconstructed using the state-of-the-art optimization algorithms under compressive sensing framework. Our results demonstrate that a 10 GHz scan rate can be achieved compared to the conventional 1 GHz microscopy imaging system while maintaining high image reconstruction quality.

Original languageEnglish
Title of host publication2020 22nd International Conference on Transparent Optical Networks (ICTON)
ISBN (Electronic)9781728184234
Publication statusPublished - 22 Sept 2020
Event22nd International Conference on Transparent Optical Networks 2020 - Online, Bari, Italy
Duration: 20 Jul 202023 Jul 2020


Conference22nd International Conference on Transparent Optical Networks 2020
Abbreviated titleICTON 2020
Internet address


  • Compressive sensing
  • Optical encoding
  • Ultrafast imaging

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials


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