Abstract
AbstractThe photonic technologies have enabled the generation of THz with the photomixing technique, which is essentially a down-conversion from optical domain to the THz. Working in pulse-mode or in continuous-wave, this approach relies on an efficient optical to THz converter. Such device can be a photoconductor or an ultra-fast photodiode. At 1.55 μm, the uni-travelling carrier photodiode (UTC-PD) has been proven to be efficient and scalable to reach the THz frequencies. We report here some examples of THz communication systems enabled by InGaAs/InP UTC-emitter, in the range 200–600 GHz. Among them, first-generation (2010–2015) passive THz hotspots based on bias-free UTC-PD at 200 GHz, broadband transmission at 400 GHz and first tests conducted in the 600 GHz band are described. The second generation (2016–2020) used a high-efficiency UTC-PD for 100 Gbit/s in the 300 GHz band leveraging on GaAs technology in the receiver part.KeywordsPhotonic techniquesUni-travelling carrier photodiodesSystem-level THz links
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
