Sub-picosecond phase-sensitive optical pulse characterization on a chip

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Alessia Pasquazi
  • Marco Peccianti
  • Yongwoo Park
  • Brent E. Little
  • Roberto Morandotti
  • José Azaña
  • David J. Moss

Detail(s)

Original languageEnglish
Pages (from-to)618-623
Journal / PublicationNature Photonics
Volume5
Issue number10
Publication statusPublished - Oct 2011
Externally publishedYes

Abstract

The recent introduction of coherent optical communications has created a compelling need for ultrafast phase-sensitive measurement techniques operating at milliwatt peak power levels and in timescales ranging from sub-picoseconds to nanoseconds. Previous reports of ultrafast optical signal measurements in integrated platforms include time-lens temporal imaging on a silicon chip and waveguide-based frequency-resolved optical gating (FROG). Time-lens imaging is phase-insensitive, and waveguide-based FROG methods require the integration of long tunable delay lines, which is still an unsolved challenge. Here, we report a device capable of characterizing both the amplitude and phase of ultrafast optical pulses with the aid of a synchronized incoherently related clock pulse. It is based on a novel variation of spectral phase interferometry for direct electric-field reconstruction (SPIDER) that exploits degenerate four-wave mixing in a CMOS-compatible chip. We measure pulses with a peak power of 1 THz, and up to 100 ps pulsewidths, yielding a timeg-bandwidth product of >100. © 2011 Macmillan Publishers Limited. All rights reserved.

Citation Format(s)

Sub-picosecond phase-sensitive optical pulse characterization on a chip. / Pasquazi, Alessia; Peccianti, Marco; Park, Yongwoo et al.
In: Nature Photonics, Vol. 5, No. 10, 10.2011, p. 618-623.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review