期刊
OPTICS LETTERS
卷 34, 期 18, 页码 2873-2875出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.34.002873
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- Future and Emerging Technologies (FET) [FP7-ICT-213681]
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. (C) 2009 Optical Society of America
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