Wavelength conversion in nonlinear optical polymer waveguides

Abstract

We developed a polyimide side-chain polymer under the key guidelines of low losses at interacting wavelengths and high nonlinearity as well as thermal stability and fabricated quasi-phase-matched waveguide devices for second harmonic generation (SHG) and difference frequency generation (DFG). In addition, waveguide structures and periodic poling electrode widths were optimized for large mode overlap and efficient phase matching between the interacting optical fields (0.775 and 1.55μm), respectively. The polymeric waveguide (1cm length) records a normalized SHG efficiency of 5.4%W−1cm−2 and demonstrates DFG with −50dB conversion efficiency for an input pump power of 10mW (cw) at room temperature.

Simple route to ridge optical waveguide fabricated via controlled evaporative self-assembly

“…Notably, the multi-mode waveguides have widely been exploited as optical sensors such as interferometer and refractometer. 38,39 The waveguides fabricated by the present approach may find potential applications as optical sensors. This study is currently undergoing.…”

Light propagation in single mode polymer nanotubes integrated on photonic circuits

“…Thereby, polymer-based photonic devices have already been reported such as organic light-emitting diodes, 3 photodiode, 4 solar cell, 5 coupling splitters, 6 or non-linear waveguides. 7 Nevertheless, despite the increasing number of reports in nanophotonics involving 1D-nanostructures, dielectric organic nanotubes present a lack of investigations. Only a few in-solution fabrication methods are appropriate for tubular nanostructure elaboration.…”