Contacts : Nadia BELABAS
With classical light we have proposed in discrete photonics in functionalized coupled waveguide arrays (Guidonics) : we design, fabricate, and operate coupled waveguide arrays in which the patterning of the coupling constant enables us to manipulate the classical or quantum flow of light. This leads to novel all-optical functions and provides a route for on-chip quantum state manipulation.
Based on analogies with optics and electronics, we have developed (Fig) patterns functionally similar to junctions, lenses, wells or waveguides, super-lattices or Bragg stacks, resonators and demonstrated their potential. We have built patterned arrays with well-defined coupling constants and characterized them in a complete and novel way (angular signature). We have therefore implemented and validated the first guidonic functions, involving an increasing number of interfaces between regions with different couplings, from the junction to the resonator.
We have developed several complementary methods to implement the basic concept of coupling patterning. Design and realization of actual devices require simple and robust modeling of the diffraction relation in well-characterized coupling regions.
Figure 1: Functionalized guidonic patterns (a) homogeneous array (b) junction (c) lens (d) super-guide (e) all-optical gate. Coupling in the blue regions is stronger than in the pink ones.
Figure 2: Envisoinned platform with optomechanical 2D photonic crystal inetrogated through SOI waveguide and acoustically driven.
C. Minot et al. Optics Letters, 539-542, 42, 3 (2017)
A. M. Apetrei et al Journal of Applied Physics, 121, 7 (2017)
C. Minot et al. European Physical Journal D, Phys. J. D 69, 20 (2015)
N. Belabas et al. Optics Express, Vol. 22, Issue 10, pp. 12379-12391 (2014)
J.M. Moison et al. Physical Review A 86 (3), 033811 (2012)