Published in Journal of Optics
The Covid-19 pandemic showed forcefully the fundamental importance broadband data communication and the internet has in our society. Optical communications forms the undisputable backbone of this critical infrastructure, and it is supported by an interdisciplinary research community striving to improve and develop it further. Since the first ‘Roadm...
Published in Journal of Semiconductors
Avalanche photodetectors (APDs) featuring an avalanche multiplication region are vital for reaching high sensitivity and responsivity in optical transceivers. Waveguide-coupled Ge-on-Si separate absorption, charge, and multiplication (SACM) APDs are popular due to their straightforward fabrication process, low optical propagation loss, and high det...
Published in Journal of Optics
With continuous growth in modulation formats, the requirement for autonomous devices is becoming more important than ever. Predicting error vector magnitude (EVM) of m-ary quadrature amplitude modulation (mQAM) are intricate issue for the effective design of transmission systems. Existing estimation techniques have survived through repetitive proce...
Optical microcombs represent a new paradigm for generating laser frequency combs based on compact chip-scale devices, which have underpinned many modern technological advances for both fundamental science and industrial applications. Along with the surge in activity related to optical micro-combs in the past decade, their applications have also exp...
In this paper, a study oriented to Free Space Optics (FSO) is carried out, identifying its main benefits and limitations. A practical case study is also considered in the city of Loja (Ecuador) for designing FSO technology, assessing suitable sites for deployment, climatic conditions and line of sight between the selected nodes, and technical chara...
Ultra-wideband transmission utilizes bandwidths beyond the standard C-band to enable significant network capacity upgrades. Upgrading the standard C-band to a C+L-band transmission scenario is already feasible, and exploratory transmission is being performed in the S-, E-, and O-bands to investigate quality of transmission (QoT) impairments in thes...
This work demonstrates mid-infrared data transmission using an epitaxial interband cascade laser on silicon emitting at 3.5 μm. Direct modulation at 5 Gbit/s with on-off keying is achieved at room temperature while digital signal processing is used to further improve the system performance.
SiPM_JLT_data.xlsx has six sub sheets each containing different data sets. Sheet1: The data is measured values of fast output pulse responses of 10010 and 30020 OnSemi SiPMs. Sheet2: The data is measured SiPM bias current obtained at different irradiance values from a 850 nm source. Sheet3: The data is a frequency response of 10010 SiPM measured us...
Published in International journal of environmental research and public health
The aim of this study is to compare the mortality rates for typical asbestos-related diseases (ARD-T: mesothelioma, asbestosis, and pleural plaques) and for lung and ovarian cancer in Brazilian municipalities where asbestos mines and asbestos-cement plants had been operating (areas with high asbestos consumption, H-ASB) compared with in other munic...
Optical microcombs represent a new paradigm for generating laser frequency combs based on compact chip-scale devices, which have underpinned many modern technological advances for both fundamental science and industrial applications. Along with the surge in activity related to optical micro-combs in the past decade, their applications have also exp...
