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Proceedings Paper

High-speed data transmission system using silicon-based optical phased array
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Paper Abstract

Optical wireless data transmission is an emerging complementary technology compared to the RF transmission in 5G and 6G communications. The optical phased array (OPA) would be a promising component for such high-speed wireless transmission requiring beam-steering function. We achieved 25Gbps data transmission using silicon-based OPA and commercialized photodetector (PD). OPA was designed as 64 channels having output beam divergence angle less than 1 for both horizontal and vertical direction. The diverging beam is received by high-speed PD with active diameter less than 30μm. The demonstration of 20Gbps data transmission was practiced with OPA’s output beam power as 0dBm and a freespace range of 1.5m. Received signal from photodetector has an eye-diagram with an extinction ratio of 5dB. Depending on our link power budget, higher output beam power and smaller beam divergence angle concludes to longer free-space range and larger bandwidth. Improvements on beam concentration by lens system could also increase range and bandwidth.

Paper Details

Date Published: 28 February 2020
PDF: 8 pages
Proc. SPIE 11286, Optical Interconnects XX, 112861A (28 February 2020); doi: 10.1117/12.2545866
Show Author Affiliations
Hyun-Woo Rhee, KAIST (Korea, Republic of)
Jong-Bum You, National NanoFab Ctr. (Korea, Republic of)
Kyeongjin Han, KAIST (Korea, Republic of)
Hyo-Hoon Park, KAIST (Korea, Republic of)


Published in SPIE Proceedings Vol. 11286:
Optical Interconnects XX
Henning Schröder; Ray T. Chen, Editor(s)

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