Electrode Structure for both Poling and Driving of the Electro-Optic Polymer in an Analog-to-Digital Converter based on an Optical Deflector

Massinissa Hadjloum (1) , Mohammed El Gibari (1) , Hong Wu Li (1) , Afshin S. Daryoush (2)

1 IETR - Institut d'Électronique et des Technologies du numéRique
2 Drexel University

Full optimization design of an electro-optic (E-O) deflector for a 44 giga-sample-per-second all-optical analog-to-digital converter application is reported in this paper. The E-O polymer based deflector is used for a spatial sampling of a radio frequency (RF) voltage applied through in-plane lateral configuration electrodes. The traditional poling configuration, in the metal-contact technique, by sandwiching the waveguide between a ground plane and a full plate top electrode is not adapted for chromophore orientation in lateral direction. We propose to build one set of electrodes, for both poling and driving the E-O polymer based optical deflector, by adding DC contacts for each strips via low-pass filter to avoid narrowing of the RF bandwidth. The DC poling contacts introduce only 1 dB additional insertion losses and reduce the bandwidth from 25.5 down to 21.6 GHz while the E-O effect should be increased due to the optimal chromophores orientation.

Mots clés: In-plane lateral electrodes; Poling; Grounded coplanar-to-coupled microstrip transitions; Electro-optic deflector; All-optical analog-to-digital converter

Domaines: Sciences de l'ingénieur [physics]

Massinissa Hadjloum, Mohammed El Gibari, Hong Wu Li, Afshin S. Daryoush. Electrode Structure for both Poling and Driving of the Electro-Optic Polymer in an Analog-to-Digital Converter based on an Optical Deflector. 23nd Telecommunications Forum, Nov 2015, Belgrade, Serbia. pp.TELFOR_IET1, ⟨10.1109/TELFOR.2015.7377531⟩. ⟨hal-01234896⟩