Read me file: Dataset for the paper "Silicon-on-insulator free-carrier injection modulators for the mid-infrared" University of Southampton – ORC Dataset creators: Milos Nedeljkovic (m.nedeljkovic@soton.ac.uk), Callum G. Littlejohns, Ali Khokhar, Mehdi Banakar, Wei Cao, Jordi Soler Penades, Denh Tran, Frederic Gardes, David Thomson, Graham Reed, Hong Wang, Goran Mashanovich The excel file contains experimental data for the paper, with each Excel sheet showing the data from a different graph. In particular: Fig. 3. (a) Simulated propagation loss of the PIN junction integrated waveguide (whose cross-section is shown in Fig. 2), with varying doping separation (S), at a wavelength of 3.8 µm. Fig. 3. (b) Experimentally measured waveguide loss spectra due to Ohmic contact doping, with separations (S) of 1.5 µm and 2.0 µm respectively, together with simulated doping loss for waveguides with the same nominal dimensions. Fig. 4. (a) Measured absorption introduced into spiral-shaped electro-absorption modulators at 3.8 µm wavelength with varying forward bias current, for devices with varying contact separation (S). The current and absorption coefficient have both been divided by the PIN diode length, which is 2.0 mm for all of these devices. Fig. 4. (b) Measured change in effective refractive index extracted from the transmission spectra of the MZI modulator, plotted against varying forward bias current per unit length applied to the 100 µm long phase shifter. Fig. 4. (c) Normalized transmission spectra of the MZI modulator for varying applied forward bias voltage applied to the PIN diode in one arm. The markers show measured points, and the solid lines show fitted theoretical MZI transmission curves. The device shown in (b) and (c) used contact separation S = 1.5 µm. Fig. 5. (a) Experimentally measured eye diagram for EA modulator at 60 Mbit/s. Fig. 5. (b) Experimentally measured eye diagram for MZI mod at 60 Mbit/s. Date of data collection: from November 2016 - December 2018 Information about geographic location of data collection: University of Southampton, U.K. Date that the file was created: December 2018