. .. , Illustration of the FOWG resin layer flexibility (reprint from [1])

. .. , FOWG film processed in inert versus normal atmosphere

, Scheme of long range surface plasmon sample in straight configuration, p.59

. , Surface of BCB Sample after the photoresist lift-off

. .. , Basic Lift off process flow for the LR-SPP structure, p.60

. , 60 IV.10 Schematic process of the waveguide based on lift-off for ZPU450 polymer.. 61 IV.11 Effect of Surface treatment on the adhesion between gold waveguide and polymer cladding

. ;. Iv, 13 Process flow for the "Flipping over" method (FOWG), p.63

, 14 FOWG / Gold waveguide after the "Flipping over" method, p.64

, Top and bottom cladding assembly process-Initial approach, p.64

I. V. , Top and bottom cladding assembly method with transparent substrate (FOWG)

. , Top and bottom cladding assembly method with peeled-off top cladding (FOWG)

. Iv, Bubbles trapped at the interface of the 2 claddings during the assembly process

I. V. , Fabrication process flow based on gold etching

, IV.20 Momentive LR-SPPW : SEM image of the facet after cleaving the wafer, vol.69

. , 70 IV.22 Imaging of the SPP intensity decay detected by camera directly from above the sample ("top view")

. , Imaging of the SPP mode profile at the output facet of the sample ("side view")

. Iv, 25 3D view of the fiber-to-sample end-fire coupling

. Iv, 26 Typical far-field IR image of the LR-SPPW propagating plasmon, p.72

. Iv, 27 Exponential decay of the intensity along a plasmonic waveguide

. Iv, LR-SPPW waveguide mask design containing 5 arrays of straight waveguides of varied width, vol.29

. , 55 µm imaging of output mode of ?1 cm long sample

. , 55 µm imaging of output mode of ?1 cm long sample

, Longitudinal and transversal output mode and comparison with simulation for three waveguides (5, 7.5, 10 µm) for Momentive polymer, p.75

, IV.33 Au-Lightlink LR-SPPW : loss measurements in TM and TE polarization.. 76 IV.34 Au-Momentive LR-SPPW (cleaved): Cut-back method, p.77

. , (diced) cut-back method

. , 77 IV.37 Ag-Lightlink LR-SPPW (diced) cut-back method, Comparison of Au and Ag LR-SPPWs : TM and TE mode imaging

, Au-FOWG LR-SPPW having air gaps at the Au / FOWG interface, p.78

, Bended plasmonic arc with both ends attached to narrow silicon stripes .. 80 IV.41 Structure layout of the double-cladding plasmonic arc, p.80

. , Double-cladding plasmonic arc: measured bending loss of the LR-SPP mode by dB/cm

. , Optical losses of the oPCB-Plasmonic Arc assembly. The lengths of the oPCB waveguide and plasmonic waveguide are 61 mm and 8 mm, respectively

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C. Vernoux, Y. Chen, L. Markey, C. Spârchez, J. Arocas et al., Flexible long-range surface plasmon polariton single-mode waveguide for optical interconnects, Opt. Mater. Express, vol.8, issue.2, pp.469-484, 2018.
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C. Vernoux, L. Markey, Y. Chen, S. Bozhevolnyi, T. Felder et al., Flexible Long-range plasmonic waveguide for optical interconnect" during the PhD days, Carnot PhD School, 2015.

C. Vernoux, L. Markey, J. C. Weeber, and A. Dereux, Long-range plasmonic waveguide for Tb/s optical interconnect application" during the PhD days, Carnot PhD School, 2013.