Antenna Integrated THz Uni-Traveling Carrier Photodiodes

Renaud, Cyril C.; Natrella, Michele; Graham, Christopher; Seddon, James; Dijk, Frédéric van; Seeds, A.J.

doi:10.1109/jstqe.2017.2725444

Cited by 55 publications

(20 citation statements)

References 48 publications

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“…Both PIN-PDs and UTC-PDs were originally developed as detectors in fiber-optical communication networks [16,19]. Later on, they were modified to match the requirements for cw terahertz emission [20][21][22][23][24][25][26]. A detailed review on the technologies and, in particular, the differences between PIN-and UTC-PDs can be found in reference [27].…”

Section: Introductionmentioning

confidence: 99%

Experimental Comparison of UTC- and PIN-Photodiodes for Continuous-Wave Terahertz Generation

Nellen

Ishibashi

Deninger

et al. 2019

J Infrared Milli Terahz Waves

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We carried out an experimental comparison study of the two most established optoelectronic emitters for continuous-wave (cw) terahertz generation: a uni-traveling-carrier photodiode (UTC-PD) and a pin-photodiode (PIN-PD). Both diodes are commercially available and feature a similar package (fiber-pigtailed housings with a hyper-hemispherical silicon lens). We measured the terahertz output as a function of optical illumination power and bias voltage from 50 GHz up to 1 THz, using a precisely calibrated terahertz power detector. We found that both emitters were comparable in their spectral power under the operating conditions specified by the manufacturers. While the PIN-PD turned out to be more robust against varying operating parameters, the UTC-PD showed no saturation of the emitted terahertz power even for 50 mW optical input power. In addition, we compared the terahertz transmission and infrared (IR) blocking ratio of four different filter materials. These filters are a prerequisite for correct measurements of the absolute terahertz power with thermal detectors.

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Section: Introductionmentioning

confidence: 99%

Experimental Comparison of UTC- and PIN-Photodiodes for Continuous-Wave Terahertz Generation

Nellen

Ishibashi

Deninger

et al. 2019

J Infrared Milli Terahz Waves

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“…And indeed, the community has come up with most efficient optical-to-wireless transmitters that work reliably up to 400 GHz8–10. Furthermore, fully integrated transmitters have been demonstrated11–13. However, the reception of wireless signals and the direct up-conversion to an optical signal has turned out to be a challenge to this very day.…”

mentioning

confidence: 99%

Microwave plasmonic mixer in a transparent fibre–wireless link

et al. 2018

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To cope with the high bandwidth requirements of wireless applications 1 , carrier frequencies are shifting towards the millimetre-wave and terahertz bands 2 – 5 . Conversely, data is normally transported to remote wireless antennas by optical fibres. Therefore, full transparency and flexibility to switch between optical and wireless domains would be desirable 6 , 7 . Here, we demonstrate for the first time a direct wireless-to-optical receiver in a transparent optical link. We successfully transmit 20 and 10 Gbit/s over wireless distances of 1 and 5 m at a carrier frequency of 60 GHz, respectively. Key to the breakthrough was a plasmonic mixer directly mapping the wireless information onto optical signals. The plasmonic scheme with its subwavelength feature and pronounced field confinement provides a built-in field enhancement of up to 90’000 over the incident field in an ultra-compact and CMOS compatible structure. The plasmonic mixer is not limited by electronic speed and thus compatible with future terahertz technologies.

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“…Such an arrangement would allow for linewidths on the order of tens of Hz to be achieved [7], thereby increasing significantly the frequency resolution of the proposed spectrometer. Additionally, the spectrometers frequency range of operation, which is currently limited by the bandwidth of the Electrical components used can also be overcome through integration of the photodiodes with a broadband antenna [8]. In this case the main challenge is the impedance matching of the device to the antenna, however, impedance matching circuits for UTC photodiodes have been already demonstrated for coplanar integrated devices [9].…”

Section: Resultsmentioning

confidence: 99%

A Photonics Enabled Millimetre Wave Frequency Domain Spectrometer for Glucose Concentration Sensing

Seddon

Bałakier

Lin

et al. 2018

2018 43rd International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz)

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This study reports the experimental demonstration of a free space frequency domain self-heterodyne spectrometer utilising a high-speed Uni-Travelling Carrier photodiode (UTC-PD) as a coherent receiver. The transmission signal through the glucose solution was measured in the V-band (50-75 GHz) frequency range with a frequency resolution step of 40 MHz. Variations in glucose concentrations of as small as 1% weight were resolved.

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Antenna Integrated THz Uni-Traveling Carrier Photodiodes

Cited by 55 publications

References 48 publications

Experimental Comparison of UTC- and PIN-Photodiodes for Continuous-Wave Terahertz Generation

Experimental Comparison of UTC- and PIN-Photodiodes for Continuous-Wave Terahertz Generation

Microwave plasmonic mixer in a transparent fibre–wireless link

A Photonics Enabled Millimetre Wave Frequency Domain Spectrometer for Glucose Concentration Sensing

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