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학술지 Demonstration of Photonics-aided Terahertz Wireless Transmission System with using Silicon Photonics Circuit
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저자
문상록, 한승준, 유상화, 박혁, 이원경, 이준기, 박종우, 유경식, 조승현, 김준영
발행일
202008
출처
Optics Express, v.28 no.16, pp.23397-23408
ISSN
1094-4087
출판사
Optical Society of America (OSA)
DOI
https://dx.doi.org/10.1364/OE.398460
협약과제
20ZH1100, 연결의 한계를 극복하는 초연결 입체통신 기술 연구, 변우진
초록
We experimentally demonstrate the use of silicon photonics circuit (SPC) in the simple and cost-effective photonics-aided Terahertz (THz) wireless transmission system. We perform theoretical investigation (with experimental confirmation) to understand that the system performance is more sensitive to the free space path loss (FSPL) at the THz wireless link than the SPC's insertion loss. The SPC, we design and fabricate, combines two incident optical carriers at different wavelengths and modulates one of two optical carriers with data to transfer, consequently reducing the system footprint that is indeed one of the key challenges that must be tackled for better practicability of the THz communication system. We perform experimental verification to show the feasibility of 40 Gb/s non-return-to-zero (NRZ) on-off-keying (OOK) signal transmission over 1.4 m wireless link for possibly its application in short-reach indoor wireless communication systems utilizing (sub-)THz frequency band such as, e.g., indoor WiFi, distributed antenna/radio systems, rack-to-rack data delivery, etc. The SPC could be further integrated with various photonic elements such as semiconductor optical amplifiers, laser diodes, and photo-mixers, which will enable the path towards all-photonic THz-wave synthesizers.
KSP 제안 키워드
40 gb/s, Different wavelengths, Experimental Verification, Experimental confirmation, Laser diode(LD), On-Off-keying(OOK), Semiconductor optical amplifiers(SOAs), Signal transmission, Silicon photonics, System footprint, System performance