31 July 2018 Low-noise graded-index plastic optical fibers for consumer-friendly pluggable 8K optical interconnect (Withdrawal Notice)
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Proceedings Volume 10557, Ultra-High-Definition Imaging Systems; 105570W (2018) https://doi.org/10.1117/12.2289239
Event: SPIE OPTO, 2018, San Francisco, California, United States
WITHDRAWAL NOTICE: This paper, originally published on 3/14/18, was replaced with a corrected/revised version on 7/31/18. If you downloaded the original PDF but are unable to access the revision, please contact SPIE Digital Library Customer Service for assistance.

Recently, ultra-high definition (UHD) displays have been rapidly developed for video formats with 4K (3840x2160) and 8K (7680x4320) resolutions. In Japan, 4K/8K broadcastings are scheduled to be started, accelerating research and development of 4K/8K distribution technologies. Current UHD displays require uncompressed video transmission with a bit rate well above 100 Gb/s, suggesting that extremely high bit-rates are required even at home in the upcoming 4K/8K era. Therefore, consumer-friendly pluggable optical interface has been highly demanded. A graded-index plastic optical fiber (GI POF) has been has been a promising optical interface cable for the consumer applications because of its flexibility, safety, and high bandwidth, which allows for transmission speeds up to ~ 40 Gb/s through a 100-m GI POF. Recently, we demonstrated that GI POFs have noise reduction effects which are closely related to microscopic heterogeneities of the core material. Here, we propose a low-noise GI POF for uncompressed 8K video transmission based on noise-sensitive multilevel pulse amplitude modulation (PAM). We evaluated worst-case bit-error-rate curve of for the low-noise GI POF and a silica GI MMF in the extremely-short optical link, where we used PAM-2 with the corresponding modulation voltage to minimum symbol-level difference in PAM-4. The results showed that the transmission quality is dominantly determined by not loss and bandwidth but noise and stability. Using the low-noise GI POF, we could significantly stabilized data transmission without precise alignment, angled fiber-facets, and optical isolators. The novel GI POF allows for consumer-friendly optical interface for the 8K video multilevel transmission. This research is based on results obtained from a project commissioned by the NEDO.
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Azusa Inoue, Azusa Inoue, Yasuhiro Koike, Yasuhiro Koike, } "Low-noise graded-index plastic optical fibers for consumer-friendly pluggable 8K optical interconnect (Withdrawal Notice)", Proc. SPIE 10557, Ultra-High-Definition Imaging Systems, 105570W (31 July 2018); doi: 10.1117/12.2289239; https://doi.org/10.1117/12.2289239

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