THz photonic wireless links with 16-QAM modulation in the 375-450 GHz band

Shi, Jia; Yu, Xianbin; Hu, Hao; Yu, Jinlong; Guan, Pengyu; Ros, Francesco Da; Galili, Michael; Morioka, Toshio; Oxenløwe, Leif Katsuo

doi:10.1364/oe.24.023777

Cited by 51 publications

(20 citation statements)

References 29 publications

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“…By taking advantage of the high flexibility and efficiency of this method, THz filters with flexible designs can be fabricated in a notably short time without prefabricated masks. THz functional devices have potential in biological imaging and in military radar . THz filters are one type of THz functional devices based on metasurfaces.…”

Section: Resultsmentioning

confidence: 99%

Flexible Gray‐Scale Surface Patterning Through Spatiotemporal‐Interference‐Based Femtosecond Laser Shaping

Jiang

et al. 2018

Advanced Optical Materials

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The function of a laser‐shaped material depends on the geometrical morphology of its laser‐induced surface structures, which is mainly determined by the spatial intensity distribution of the laser. However, conventional patterning methods based on laser shaping techniques have shortcomings in efficiency or flexibility. A novel patterning method is developed in the present study for mask‐free and flexible fabrication of surface structures through a time‐saving spatiotemporal‐interference‐based femtosecond laser shaping technique that is based on a Michelson interferometer. The phase‐difference distribution is controlled by a spatial light modulator so that the interference intensity distribution can be modulated to user‐designed shapes. The congruence between the interference intensity distribution and the geometries on phase holograms enables the generation of phase holograms without complicated algorithms and time‐consuming calculations. This uniquely simple technique realizes flexible gray‐scale patterning on bulk material surfaces with a single femtosecond laser pulse. Thus, by using the on‐the‐fly technique, fabrication of large‐area surface structures is realized. Moreover, this technique is applied to fabricate complex structures through splicing. As an application example, three types of terahertz filters, including band‐stop and band‐pass filters, are fabricated successfully; their transmittance is in good agreement with the finite‐difference time‐domain simulation results.

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Section: Resultsmentioning

confidence: 99%

Flexible Gray‐Scale Surface Patterning Through Spatiotemporal‐Interference‐Based Femtosecond Laser Shaping

Jiang

et al. 2018

Advanced Optical Materials

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“…Наприклад, в роботі [1] представлений експериментальний зразок симплексної безпроводової системи зв'язку терагерцового діапазону з використанням модуляції QAM-16, який забезпечує передавання інформації із сумарною швидкістю 80 Гбіт/с у чотирьох суміжних частотних каналах, що займають смугу радіочастот 375÷450 ГГц, на відстань не більше 0,5 м, забезпечуючи при цьому ймовірність бітової помилки не гірше за 3,8•10 -3 . У свою чергу, в  Г. Л. Авдєєнко, С. Г. Бунін, Т. М. Наритник роботі [2] представлено розробку монолітних інтегральних мікросхем передавача та приймача діапазону 300 ГГц, а також макету симплексної безпроводової системи зв'язку на їх основі, яка забезпечує при використанні модуляції QPSK передавання інформації зі швидкістю 64 Гбіт/с на відстань до 2 м при значенні вектора похибки EVM (Error Vector Magnitude) не більше -9,65 дБ.…”

Section: вступunclassified

Терагерцові Технології В Телекомунікаційних Системах. Частина 2. Дослідження Та Моделювання Передавання Телевізійних Сигналів Стандарту DVB-C І Імпульсного Надширокосмугового Сигналу Радіолінією Терагерцового Діапазону

Авдєєнко¹,

Бунін²,

Наритник³

2018

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The laboratory testbed of a digital simplex radio-relay system of the terahertz range has been studied for the first time in practical terms. It consists of the receiver and transmitter parts of 130÷134 GHz frequency range and a digital modem with a channel data transmission of up to 1200 Mbps for a communication point-to-point distance under normal conditions within 1 km. It is shown that the proposed telecommunication system, which implements the concept of the creation of software-defined radio systems based on Wi-Fi technology, can be highly productive in the next generation mobile communication networks providing the appropriate transmission speeds, reliability, and security. It is studied the parameters of multichannel digital TV signal DVB-C standard when it is transmitted through the testbed of the transmitter and receiver parts of 130 GHz band. The results of the research showed that the application of lower part of terahertz frequency band (130 GHz) with a bandwidth of 24 MHz allows the transmission of three DVB-C television broadcasting channels with a total transport speed of 125 Mbit/s with a high subjective quality of TV programs. The results of the simulation of impulse ultrawideband (IR-UWB) signal transmission by the wireless link of terahertz band are presented. The results of researches of changes of IR-UWB Gaussian monocycle in the transmitter part and its reception by the receiver part of 130.4÷131.5 GHz terahertz band are presented for the first time. On the basis of the results of the research, the requirements for parameters of terahertz wireless link are formulated to ensure acceptable quality of ultrawideband impulse signals receiving. Development of the transmitter and receiver parts of radio relay system of the terahertz range has no direct current analogs in Ukraine. It can provide a significant breakthrough in the development of the telecommunications industry. The obtained research results will also contribute to the development of telecommunications-related industries, in particular: radio astronomy, inter-satellite communication, radar systems, medicine, etc.

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“…In terms of THz wireless commutations, the carrier frequencies ranging from 350-910 GHz have been recommended for indoor communications with the 10-100 m range [3]. Extensive research has been conducted to achieve high data rates transmissions at these frequencies [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Using photonic schemes, high data rates have been achieved by frequency division multiplexing techniques often yielding data rates of 100 Gbit/s and above.…”

Section: Introductionmentioning

confidence: 99%