Abstract
Abstract
Highlights
The need for optical interconnects is currently driving huge efforts in the development of photonic devices integrated on-chip.1 Like their electronic counterparts, these devices are required to be energy efficient, robust, and compact
Two photon absorption (TPA) is a major limitation when the targeted nonlinear process occurs in the telecom windows, as the photon energy is greater than half of the material bandgap energy
We focus our attention on four wave mixing (FWM) in Photonic Crystal (PhC) cavities
Summary
The need for optical interconnects is currently driving huge efforts in the development of photonic devices integrated on-chip. Like their electronic counterparts, these devices are required to be energy efficient, robust, and compact. The need for optical interconnects is currently driving huge efforts in the development of photonic devices integrated on-chip.1 Like their electronic counterparts, these devices are required to be energy efficient, robust, and compact. Two photon absorption (TPA) is a major limitation when the targeted nonlinear process occurs in the telecom windows, as the photon energy is greater than half of the material bandgap energy.4 To circumvent this limitation, the use of hybrid structures, where a material with a bandgap wide enough to cancel TPA (such as III–V semiconductor alloys) is heterogeneously integrated on silicon, is an excellent solution. We demonstrate experimentally a PhC resonator integrated on a silicon photonic platform with about 50 resonances forming a comb with constant FSR (Free Spectral Range), matching the requirements for parametric interaction
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