Abstract

Squeezed light was generated at a telecommunication wavelength via single-pass optical parametric amplification in a periodically poled $\mathrm{MgO}\text{-}\mathrm{doped}$ ${\mathrm{LiNbO}}_3$ waveguide. Classical parametric deamplification of $-8.9\mathrm{dB}$ was achieved. This large magnitude of deamplification indicates that the problem of gain-induced diffraction was avoided by employing the waveguide. Squeezing of $3.2\mathrm{dB}$ was directly observed using a time-domain pulsed homodyne detector.

© 2007 Optical Society of America

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