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Efficient compact modelling of UTC-photodiode towards terahertz communication system design

Mukherjee, C; Natrella, M; Seddon, J; Graham, C; Mounaix, P; Renaud, CC; Maneux, C; (2020) Efficient compact modelling of UTC-photodiode towards terahertz communication system design. Solid-State Electronics , 170 , Article 107836. 10.1016/j.sse.2020.107836.

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Abstract

Monolithic optoelectronic integrated circuits, OEICs are seen as key enabling technologies to minimal power loss criteria. Monolithic OEICs combine, on the same die, cutting-edge optical devices and high speed III-V electronics able to generate terahertz signal targeting beyond-5G networks. Computationally efficient compact models compatible with existing software tool and design flow are essential for timely and cost-effective OEIC achievement. The analog nature of photonic devices wholly justifies the use of methodologies alike the ones employed in electronic design automation, through implementation of accurate (and SPICE-compatible) compact models. This multidisciplinary work, describes an efficient compact model for Uni-Traveling Carrier photodiodes (UTC PD) which is a key component for OEICs. Its equations feature the UTC PD electronic transport and frequency response along with its photocurrent under applied optical power. It also dynamically takes into account the device junction temperature, accounting for the self-heating effect. Excellent agreement between model and measurements as well as model scalability (several geometries have been validated) has been achieved that marks the first demonstration of a multi-physics, computationally efficient and versatile compact model for UTC-PDs.

Type: Article
Title: Efficient compact modelling of UTC-photodiode towards terahertz communication system design
DOI: 10.1016/j.sse.2020.107836
Publisher version: https://doi.org/10.1016/j.sse.2020.107836
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Science & Technology, Technology, Physical Sciences, Engineering, Electrical & Electronic, Physics, Applied, Physics, Condensed Matter, Engineering, Physics, Compact model, Optoelectronic integrated circuits, Terahertz communication, Uni-traveling carrier photodiode, POWER, PHOTONICS, LEVEL, BAND, MW
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10107537
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