Physics – Quantum Physics
Scientific paper
2009-02-19
Optics Letters Vol. 34, Iss. 18, pp. 2873-2875 (2009)
Physics
Quantum Physics
4 pages, 3 figures
Scientific paper
10.1364/OL.34.002873
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 telecommunication wavelength.
Avenhaus Malte
Eckstein Andreas
Mosley Peter J.
Silberhorn Christine
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