NDLI: Single-shot measurements of the ultrabroadband continuum from microstructure fiber

Content Provider	IEEE Xplore Digital Library
Author	Xun Gu Kimmel, M. Shreenath, A.P. Trebino, R. Gaeta, A.L. Windeler, R.S. Kerbage, C. Eggleton, B.J.
Copyright Year	2002
Description	Author affiliation: Sch. of Phys., Georgia Inst. of Technol., Atlanta, GA, USA (Xun Gu; Kimmel, M.; Shreenath, A.P.; Trebino, R.)
Abstract	Summary form only given. It has recently become possible to generate ultrabroadband continuum from 400 to 1600 nm with a TEM/sub 00/ spatial mode. This involves simply allowing sub-nanojoule 800 nm pulses to propagate through a short length of newly developed microstructure optical fiber, which can be nearly dispersion-free in the visible. We have made cross-correlation-FROG (XFROG) measurements of the continuum. These measurements nicely reveal the parabolic group delay of the pulse. However, the retrieved spectrum from our XFROG measurements has much more structure than the directly measured spectrum. Also, we observe fine-scale structure in the retrieved trace that is not seen in the measured trace, a clear indication that something is amiss. Usually, such poor agreement indicates that the more difficult measurement -the XFROG measurement - is contaminated with systematic error. A possible explanation for these observations is that variations in the continuum pulse from shot-to-shot, as predicted by theory, are washing out the structure in directly measured spectra and in measured XFROG traces. That the structure information somehow remains in the multishot XFROG trace is possible because some single-shot information is preserved in the XFROG trace, as all FROG traces contain substantial redundancy, and information washed out in one domain may remain in the other. Specifically, fine-scale frequency information is also present in the trace in the form of slow oscillations in delay, which are less likely to be washed out. To verify this hypothesis, we performed the first single-shot spectral measurements of the microstructure-fiber continuum.
Sponsorship	IEEE/Lasers & Electro-Opt. Soc. OSA-Opt. Soc. America Quantum Electron. Div. Eur. Phys. Soc. Opt. Soc. Japanese Quantum Electron. Joint Group
Starting Page	485
Ending Page	486
File Size	277877
Page Count	2
File Format	PDF
ISBN	1557527067
DOI	10.1109/CLEO.2002.1034233
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-05-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Optical Soc. of America
Subject Keyword	Optical fibers Pulse measurements Optical propagation Redundancy Frequency Pollution measurement Microstructure Delay Optical pulses Optical fiber dispersion
Content Type	Text
Resource Type	Article

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