Display Settings:


Send to:

Choose Destination
See comment in PubMed Commons below
Opt Express. 2009 Nov 9;17(23):21222-7. doi: 10.1364/OE.17.021222.

Strong tunable slow and fast lights using a gain-clamped semiconductor optical amplifier.

Author information

  • 1Department of Physics, Chungnam National University, Daejeon 305-764, Korea.


Previously demonstrated slow light is still far from applications, particularly due to the limited bandwidth and control speed. Although semiconductor-based slow light has the high bandwidth and sub-nanosecond control speed, slow light was observed only in the absorption regime with attenuation, while fast light observed in the gain regime with amplification. The large power difference in two regimes makes the use of the optical delay impractical. We report novel slow light in the gain regime, with a high power comparable to that of fast light, utilizing the anomalous gain characteristic in a gain-clamped semiconductor optical amplifier. The slow light is tunable to fast light with the current as the only variable. Additional high speed operation, fast delay control, and wide range of operation wavelength make the present approach practical.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Icon for Optical Society of America
    Loading ...
    Write to the Help Desk