| 1. |
- He, Sailing, et al.
(författare)
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Optical nano-antennas and metamaterials
- 2009
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Ingår i: MATERIALS TODAY. - 1369-7021. ; 12:12, s. 16-24
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Tidskriftsartikel (refereegranskat)abstract
- We review some recent approaches to transmission enhancement and light harvesting based on optical nano-antennas and metamaterials. Nano-cavity antennas are used to enhance the extraordinary transmission of TM-polarized light through vertical nano-slits in a metal film. The enhanced transmission of TE-polarized waves through an array of subwavelength-slits in a thin metal film at low frequencies (including microwave) is also investigated. Light harvesting with a metamaterial cloaking shell is also demonstrated.
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| 2. |
- He, Sailing, et al.
(författare)
-
Transmission enhancement, perfect absorption and field squeezing with nano-antennas and metamaterials
- 2009
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Ingår i: THEORETICAL AND COMPUTATIONAL NANOPHOTONICS. - : AIP. - 9780735407152 ; , s. 18-20
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Konferensbidrag (refereegranskat)abstract
- We report some of our recent progress in enhancing the extraordinary optical transmission (EOT), perfect absorption and field squeezing. Based on the excitation of surface plasmon waves in optical nano-antennas, the extraordinary transmission of light through a vertical nano-slit in a metal film is realized. Omni-directional, broadband and polarization-insensitive absorption of light is achieved in a thin metamaterial absorber which consists of cross-antennas and a metal ground. A dielectric split ring inside a permeability-near-zero metamaterial is used to squeeze electromagnetic energy and obtain strong magnetic field at the gap without using any resonance mechanism.
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| 3. |
- Tang, Yongbo, et al.
(författare)
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Design and optimization of an arbitrarily segmented traveling wave electrode for an ultrahigh speed electroabsorption modulator
- 2008
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Ingår i: Optics Communications. - : Elsevier BV. - 0030-4018 .- 1873-0310. ; 281:20, s. 5177-5182
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Tidskriftsartikel (refereegranskat)abstract
- The modulation response of an arbitrarily segmented traveling wave electroabsorption modulator (TW-EAM) with a non-periodic electrode layout is analyzed with an effective approach based on the transmission line theory. An optimization method based on a genetic algorithm is used to optimize the segmented electrode with additional capacitive pads for a TW-EAM. Optimized electrode structures are given for 165 mu m-length devices under standard 50 Omega RF termination condition and 210 mu m-length devices with smaller integrated resistors. Great enhancement of performances in modulation response is achieved as compared to the periodic design reported previously. The simulation with the parameters extracted from measurement results suggests that a 3 dB-bandwidth over 100 GHz could be achieved. The eye diagram from the simulation demonstrates that such devices would be competent for a 100Gb/s optical network.
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| 4. |
- Yu, Xianbin, et al.
(författare)
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Photonic-wireless Communication and Sensing in the Terahertz Band
- 2023
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Ingår i: 2023 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION, OFC. - : Institute of Electrical and Electronics Engineers (IEEE).
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Konferensbidrag (refereegranskat)abstract
- This paper reviews the potential of THz photonics in communication and sensing by presenting our experimental results in the 300-500 GHz. Benefiting from the large available bandwidth in both THz and photonics, THz communications with high speed and THz imaging with high resolution have been achieved.
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| 5. |
- Zhang, Hongqi, et al.
(författare)
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Tbit/s Multi-Dimensional Multiplexing THz-Over-Fiber for 6G Wireless Communication
- 2021
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Ingår i: Journal of Lightwave Technology. - : Institute of Electrical and Electronics Engineers (IEEE). - 0733-8724 .- 1558-2213. ; 39:18, s. 5783-5790
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Tidskriftsartikel (refereegranskat)abstract
- Photonics-aided terahertz (THz) wireless systems have been progressively developed to accommodate the forthcoming wireless communication with extremely high data rates in recent years. However, restrained by the obtainable signal-to-noise ratio (SNR) and the dimensions explored in THz photonic wireless systems, achieving data rates of Tbit/s and beyond is still challenging. In this paper, we present a multi-dimensional multiplexing Tbit/s THz-over-Fiber wireless communication system, by efficiently benefiting from the multiplexing gain in both optical wavelength and space domains. Enabled by a combined routine of an optical frequency comb, a low inter-core crosstalk (IC-XT) multi-core fiber and advanced digital signal processing, a line rate of up to 1176 Gbit/s over a wireless distance of 10 m in the 350 GHz band is experimentally demonstrated without any THz amplifiers, resulting in a net data rate of up to 1059 Gbit/s. To the best of our knowledge, this is the first time that beyond Tbit/s wireless data rate is successfully achieved in the THz region above 300 GHz, making a significant contribution to the development of THz-over-Fiber systems for the sixth generation (6G) wireless communication.
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