Direct detection of a fast modulated terahertz light with a spectrally matched quantum‐well photodetector

Tan, Zhongxin; Li, Hua; Wan, Wen‐Ming; Fu, Zhanglong; Wang, Chang; Cao, Juncheng

doi:10.1049/el.2016.3099

Cited by 7 publications

(5 citation statements)

References 9 publications

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“…Afterwards, a wireless transmission link of 2.2 m operating at 4.13 THz is demonstrated, in which a spectrally-matched QWP is used as the receiver [78]. Subsequently, the authors in [79] present a fast detection system by using a THz QCL and QWP, which confirms again that the THz QWP is a promising candidate for high-speed transmission systems.…”

Section: Quantum Well Photodetector (Qwp)mentioning

confidence: 87%

Terahertz band: Lighting up next-generation wireless communications

Zhang

2021

China Commun.

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With the explosion of wireless data rates, the terahertz (THz) band (0.1-10 THz) is envisioned as a promising candidate to break the existing bandwidth bottleneck and satisfy the ever-increasing capacity demand. The THz wireless communications feature a number of attractive properties, such as potential terabit-per-second capacity and high energy efficiency. In this paper, an overview on the state-of-the-art THz communications is studied, with a special focus on key technologies of THz transceivers and THz communication systems. The recent progress on both electronic and photonic THz transmitters are presented, and then the THz receivers operating in direct-and heterodyne reception modes are individually surveyed. Based on the THz transceiver schemes, three kinds of THz wireless communication systems are reviewed, including solid-state electronic systems, photonics-assisted systems and all-photonics systems. The prospective key enabling technologies, corresponding challenges and research directions for lighting up high-speed THz communication systems are discussed as well.

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Section: Quantum Well Photodetector (Qwp)mentioning

confidence: 87%

Terahertz band: Lighting up next-generation wireless communications

Zhang

2021

China Commun.

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“…To further verify the communication performance of the device, in 2017, Zhiyong Tan et al adopted transmission line packaging combined with bias tee signal loading technology to realize the direct detection of a fast modulated terahertz laser [41]. The system worked at 4.2 THz.…”

Section: Quantum Cascade Laser-based Thz Direct Modulationmentioning

confidence: 99%

Terahertz direct modulation techniques for high-speed communication systems

Zhou

Zhang

et al. 2021

China Commun.

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Terahertz communication technology can provide abundant frequency resources, strong confidentiality, antijamming capability, communication tracking capability and the ability to achieve highspeed data transmissions and can serve as an important technical method for high-speed communications in the future. Among these terahertz communication technologies, terahertz direct modulation technology is a key means to achieve low system complexity and power consumption. In this paper, a review and outlook of terahertz direct modulation technology are proposed from the aspects of high-electron-mobilitytransistor-based terahertz direct modulation, parallelswitch terahertz direct modulation, diode-based terahertz direct modulation, quantum cascade laser-based terahertz direct modulation and new-material-based terahertz direct modulation. We hope through this paper that more readers can gain knowledge about the development and challenges of terahertz direct modulation technology for high-speed communication systems, thus promoting the development of high-speed terahertz communication technology based on direct modulation.

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“…THz waves have been used for imaging applications since 1990. The principle of THz imaging [22][23][24][25][26] is to obtain a THz image of the sample by collecting the amplitude, phase, and polarization information reflected or transmitted at different positions of the sample, and transforming the collected THz information into parameters that can reflect the physical and chemical properties of the sample, then corresponding to the spatial position parameters of the sample, combining with image restoration technology. THz imaging has many classification methods.…”

Section: Terahertz Quantum-well Photodetector Imaging Technologymentioning

confidence: 99%

Research Progress on Terahertz Quantum-Well Photodetector and Its Application

Shao

Tan

et al. 2021

Front. Phys.

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Compared with other typical terahertz (THz) detectors, the quantum-well photodetector (QWP) has the advantages of high detection sensitivity, fast response, mature fabrication, small size, and easy integration. Therefore, it is suitable for high-speed detection and imaging applications at the THz band. Researchers, both domestic and overseas, have systematically studied material design and device performance of the THz QWP. The design of the device is such that the peak frequency error is within 8%, the maximum peak responsibility is 5.5 A/W, the fastest response speed is 6.2 GHz, the best noise equivalent power is ∼10−13 W/Hz0.5, and the spectrum range is 2.5–6.5 THz. In this article, firstly the basic principles and theoretical calculations of the THz QWP are described, and then the research progress of the THz QWP in our research group at imaging and communication is reviewed, which looks forward to its future development.

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Direct detection of a fast modulated terahertz light with a spectrally matched quantum‐well photodetector

Cited by 7 publications

References 9 publications

Terahertz band: Lighting up next-generation wireless communications

Terahertz band: Lighting up next-generation wireless communications

Terahertz direct modulation techniques for high-speed communication systems

Research Progress on Terahertz Quantum-Well Photodetector and Its Application

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