Abstract

We demonstrate the implementation of a fiber-integrated spectrograph utilizing chromatic group velocity dispersion (GVD) in a single-mode fiber. By means of GVD we stretch an ultrafast pulse in time in order to spectrally resolve single photons in the time domain, detected by single-photon counting modules with very accurate temporal resolution. As a result, the spectrum of a very weak pulse is recovered from a precise time measurement with high signal-to-noise ratio. We demonstrate the potential of our technique by applying our scheme to analyzing the joint spectral intensity distribution of a parametric downconversion source at a telecommunication wavelength.

© 2009 Optical Society of America

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History
Original Manuscript: February 18, 2009
Revised Manuscript: June 9, 2009
Manuscript Accepted: July 23, 2009
Published: September 15, 2009

References

Author Affiliations

Malte Avenhaus, Andreas Eckstein, Peter J. Mosley, Christine Silberhorn

Max-Planck Institute for the Science of Light

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