All-Optical Switching with Low-Peak Power in Microfabricated AlGaAs Waveguides

R. P. Espindola, M. K. Udo, D. Y. Chu, S. L. Wu, S. T. Ho, R. C. Tiberio, P. F. Chapman, D. Cohen

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We report all-optical switching with low-peak power in a microfabricated AlGaAs waveguide operating at 1.6 µm. We show that by using a 1-cm long microfabricated strongly-guided waveguide with 0.8 µm by 0.9 µm mode cross-sectional area, switching is achieved with an average power of 1.2 mW for 82-MHz mode-locked 430 fs pulses. The estimated peak pump power and pulse energy inside the microfabricated waveguide were ~30 W and ~14.6 pJ, respectively, which is 5–10 times lower than the values needed with conventional waveguides. In terms of a practicality index defined via switching power times waveguide length, this waveguide has around the best value.

Original languageEnglish (US)
Pages (from-to)641-643
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number6
StatePublished - Jun 1995

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'All-Optical Switching with Low-Peak Power in Microfabricated AlGaAs Waveguides'. Together they form a unique fingerprint.

Cite this