Shuang Yin
Shuang Yin is a staff hardware engineer at Google, working on optical technologies for AI/ML and data center network applications. Shuang’s research covers optical access network architectures, advanced modulation formats, and digital signal processing in high-speed optical communication systems. He received B.S. in Optical Engineering from Zhejiang University, M.S. and Ph.D. degrees in Electrical Engineering from Stanford University.
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This is intended for IEEE802.3df contribution. In this contribution, we describe the FEC requirements for 800GbE/1.6TbE optics from an operator's perspective, and how to make a fair comparison among different FEC options.
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Long-Reach Wavelength-Routed TWDM PON: Technology and Deployment
Adam Edwin Taylor Barratt
Claudio DeSanti
Daoyi Wang
Joy Jiang
Junyan Geng
Liang Du
Tao Zhang
Xiangjun Zhao
Journal of Lightwave Technology (2019)
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Abstract—We present a long-reach wavelength-routed time-wavelength division multiplexing (TWDM) passive optical network (PON) architecture (LRWR-PON) and its commercial implementation, that supports up to 768 users per fiber strand and up to 50 km transmission distance. The increased reach allows central offices to become more flexible and fewer in quantity, while the increased aggregation reduces the size and number of optical cables needed, enabling smaller trenches to be
used. LRWR-PON also contains eight additional point-to-point wavelengths on each fiber to support wireless sites and/or high-speed dedicated bandwidth applications, greatly simplifying converged network designs. Multiple new optical components and modules have been developed to implement our novel architecture. These include a Cyclic Arrayed Waveguide Grating to passively aggregate and distribute access wavelengths in the field, an integrated optical amplifier and multiplexer combination device to aggregate optical line terminal (OLT) channels and extend the system reach, several dense wavelength division multiplexing OLT optics, and a colorless time- wavelength division multiplexing optical network terminal employing ultra-low cost tunable burst-mode lasers. Our analysis shows the simplification of the civil construction enabled by LRWR-PON greatly outweighs the increased optical component complexity. To date, we have conducted a successful field trial with 606 real-life customers for more than 9 months and we have been rolling out this system in new Google Fiber markets for production services.
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