Abstract

Squeezing, using optical parametric amplification (i.e. a second-order nonlinearity, or χ⁽²⁾) has a long history. Squeezing with a third-order nonlinearity (χ⁽³⁾) was pioneered by the IBM group of Levenson and Shelby¹ using cw excitation. The use of pulses in a Sagnac loop proposed by Shir- asaki and Haus² was followed up by experiments at IBM using solitons and at MIT using Gaussian pulses at 1.3 μm, at the zero dispersion wavelength of the fiber.

© 1995 Optical Society of America