Optically transparent wavelength converters, in which the output is a wavelength-converted
replica of the input, may be required to improve performance and ease management in …

We describe the use of GaAs-based semiconductor optical waveguides for nonlinear
frequency conversion of femtosecond pulses in the infrared. Different techniques for the …

Frequency tuning of optical parametric generators in periodically poled LiNbO3 by applying
a periodic electric field was demonstrated. Remarkable wavelength change was achieved …

A novel cascaded second-order nonlinear interaction (/spl chi//sup (2)/), which is
simultaneously based on sum frequency generation (SFG) and difference frequency …

We study solitons in one-dimensional quadratic nonlinear photonic crystals with modulation
of both the linear and nonlinear susceptibilities. We derive averaged equations that include …

Multichannel wavelength converters may be important components in the cross-connects in
future wavelength-division multiplexed (WDM) transport networks. We demonstrate a …

We envisage the enhanced effect of harmonic generations from aperiodic optical
superlattices AOSs achieved by inverting poled ferroelectric domains in samples. The …

A high-conversion-efficiency, low-threshold, quasi-continuous-wave optical parametric
generator (OPG) based on a periodically poled lithium niobate (PPLN) crystal is presented …

We propose a new approach to design aperiodically poled lithium niobate (APLN) crystals
for multiple wavelengths parametric amplification. The design principle of this kind of APLN …

The ability to tune the quasi-phase-matching (QPM) frequency is a highly desirable though
lacking feature of many nonlinear devices. To this end, we consider QPM in a special class …