Abstract
We present the first demonstration of an optical sampling system, using
the optical Kerr effect in a chip-scale device, enabling combined capability
for femtosecond resolution and broadband signal wavelength tunability. A
temporal resolution ${ < }500$ fs is achieved using four-wave mixing in a 7-cm-short
chalcogenide planar waveguide. The use of a short length, dispersion-shifted
waveguide with ultrahigh nonlinearity ($10^4\;{\rm W}^{-1}{\cdot}{\rm{km}}^{-1}$) enables high-resolution optical sampling without the detrimental
effect of chromatic dispersion on the temporal distortion of the signal and
sampling pulses, as well as their phase mismatch. Using the device, we
successfully monitor a 640-Gb/s optical time-division multiplexing (OTDM)
datastream, showcasing its potential for integrated chip-based monitoring of
signals at bitrates approaching and beyond Tb/s. We discuss fundamental
limitations and potential improvements.
© 2010 IEEE
PDF Article
More Like This
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
or
Login to access Optica Member Subscription