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Proceedings Paper

Ultra-sensitive NIR-spectrometer based on frequency up-conversion detector
Author(s): Lijun Ma; Oliver Slattery; Xiao Tang
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Paper Abstract

We developed a spectrometer for signals at single photon levels in the near infrared (NIR) region based on a tunable up-conversion detector. This detector uses a 5-cm periodically poled lithium niobate (PPLN) waveguide to convert NIR photons to a shorter wavelength that are then detected by a silicon avalanche photodiode. The sensitivity of this spectrometer is -126 dBm, which is three orders-of-magnitude higher than any commercial optical spectrum analyzer in this wavelength range. Additionally, we use two PPLN waveguides to implement a polarization-independent up-conversion spectrometer, and use it to study a fiber-based quantum communication system.

Paper Details

Date Published: 28 April 2010
PDF: 10 pages
Proc. SPIE 7680, Next-Generation Spectroscopic Technologies III, 76800P (28 April 2010); doi: 10.1117/12.847133
Show Author Affiliations
Lijun Ma, National Institute of Standards and Technology (United States)
Oliver Slattery, National Institute of Standards and Technology (United States)
Xiao Tang, National Institute of Standards and Technology (United States)

Published in SPIE Proceedings Vol. 7680:
Next-Generation Spectroscopic Technologies III
Mark A. Druy; Christopher D. Brown; Richard A. Crocombe, Editor(s)

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