A high-speed plasmonic barium titanate (BTO, BaTiO3) Mach-Zehnder modulator is presented. We combine nanoscale plasmonics with BTO as solid-state active material and silicon nitride (SiN) for versatile and low loss waveguiding, and integrate them in a monolithic platform. We demonstrate a plasmonic BTO modulator processed onto foundry-produced SiN. The 15 mu m long high-speed modulator features a flat electro-optic frequency response up to 70 GHz and is expected to be flat way beyond. A low V pi L product of 144 V mu m is shown. Data experiments reaching 216 Gbit/s with a 216GBd 2PAM signal and 256 Gbit/s with a 128GBd 4PAMsignal are demonstrated. The merger of the versatile silicon nitride platform with high-speed plasmonics using the highly nonlinear ferroelectric BTO is an attractive solution as a future Tb/s optical interconnect platform.

Ultra-short, low-loss graphene-organic hybrid phase modulators are introduced. 20 Gbit/s PAM-2 and PAM-4 data modulation are demonstrated with devices of 25 μm length and on-chip losses of 0.86 dB.

A plasmonically enhanced graphene organic hybrid electro-optic phase modulator of 10 μm length with low plasmonic losses of 2.5 dB and a bandwidth of 270 GHz and beyond is demonstrated. The device is verified for high-speed on-off-keying data modulation at a line rate of 140 Gbit/s.

An electrically tunable graphene-organic hybrid ring resonator using graphene electrodes and organic nonlinear electric-optic materials is proposed and realized. The presented ring resonator demonstrates a high loaded quality factor of 960 and an extracted effective Pockels effect coefficient of 24 pm/V.

A novel plasmonic graphene-organic hybrid phase modulator featuring the short length and fast speed of plasmonics (10µm length, bandwidths in excess of 70GHz) but benefitting from the lower losses of graphene (on-chip insertion losses of 4.5dB) is introduced. Successful operation at 100 Gbit/s is shown.

We demonstrate fast high-precision non-contact distance measurements to technical surfaces using a pair of dual-color electro-optic frequency combs for synthetic-wavelength interferometry (SWI). The dual-color combs are generated from continuous-wave (cw) lasers at 1300 nm and 1550 nm, which are jointly fed to a pair of high-speed dual-drive Mach-Zehnder modulators. The dual-color approach is used for continuous and dead-zone-free compensation of temperature-induced fiber drift. We achieve standard deviations below 2 mu m at an acquisition time of 9.1 mu s for measurements through 7 m of single-mode fiber. Despite the technical simplicity of our scheme, our concept can well compete with other comb-based distance metrology approaches, and it can maintain its accuracy even under industrial operating conditions. The viability of the concept is demonstrated by attaching the fiber-coupled sensor head to an industrial coordinate measuring machine for acquisition of surface profiles of various technical samples. Exploiting real-time signal processing along with continuous fiber drift compensation, we demonstrate the acquisition of point clouds of up to 5 million data points during continuous movement of the sensor head. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

We suggest an integrated mid-IR light source based on difference frequency generation. Using modal phase matching in hybrid plasmonic waveguides we show a tunable, on-chip mid-IR source concept.