Silicon nitride photonics is on the rise owing to the broadband nature of the material, allowing applications of biophotonics, tele/datacom, optical signal processing and sensing, from visible, through near to mid-infrared wavelengths. In this paper, a review of the state of the art of silicon nitride strip waveguide platforms is provided, alongside the experimental results on the development of a versatile 300 nm guiding film height silicon nitride platform.

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Abstract-A novel demodulation technique which is transparent to radio-frequency (RF) carrier frequency is presented and experimentally demonstrated for multigigabit wireless signals. The presented demodulation technique employs optical single-sideband filtering, coherent detection, and baseband digital signal processing. Multigigabit wireless signal demodulation of 1.25-Gbaud quadrature phase-shift-keying modulated data at 40-and 35-GHz RF carrier frequency is experimentally demonstrated using the proposed demodulation scheme.

The radio-over-fiber coexistence of ECMA-384 ultra-wide band (UWB) with IEEE 802.16d (WiMAX) wireless transmission standards in indoor scenarios using 50 μm multi mode fiber and low cost 850 nm VCSEL transmitters, is explored in an experimental set-up. Both fiber transmission and radio propagation are measured demonstrating that coexistence of both wireless standards is possible in real indoor applications, the fiber dispersion being the main degradation factor.

We report on the first demonstration of QPSK based Wireless-over-Fibre link in 75-110GHz band with a record capacity of up to 16Gb/s. Photonic wireless signal generation by heterodyne beating of free-running lasers and baud-rate digital coherent detection are employed