title: Power monitoring in dielectric-loaded plasmonic waveguides with internal Wheatstone bridges.
abstract: We report on monitoring the mode power in dielectric-loaded surface plasmon polariton waveguides (DLSPPWs) by measuring the resistance of gold electrodes, supporting the DLSPPW mode propagation, with internal (on-chip) Wheatstone bridges. The investigated DLSPPW configuration consisted of 1-μm-thick and 10-μm-wide cycloaliphatic acrylate polymer ridges tapered laterally to a 1-μm-wide ridge placed on a 50-nm-thin and 4-um wide gold stripe, all supported by a ~1.7-µm-thick Cytop layer deposited on a Si wafer. The fabricated DLSPPW power monitors were characterized at telecom wavelengths, showing very high responsivities reaching up to ~6.4 μV/μW (for a bias voltage of 245 mV) and the operation bandwidth exceeding 40 kHz.
authors.affiliation: Institute of Technology and Innovation, Iniversity of Southern Denmark, Niels Bohrs Alle 1, DK-5230 Odense M, Denmark.
authors.forename: Jacek
authors.initials: J
authors.lastname: Gosciniak
authors.forename: Michael G
authors.initials: MG
authors.lastname: Nielsen
authors.forename: Laurent
authors.initials: L
authors.lastname: Markey
authors.forename: Alain
authors.initials: A
authors.lastname: Dereux
authors.forename: Sergey I
authors.initials: SI
authors.lastname: Bozhevolnyi