Sub-picosecond phase-sensitive optical pulse characterization on a chip
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 618-623 |
Journal / Publication | Nature Photonics |
Volume | 5 |
Issue number | 10 |
Publication status | Published - Oct 2011 |
Externally published | Yes |
Link(s)
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.
In: Nature Photonics, Vol. 5, No. 10, 10.2011, p. 618-623.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review