CITIC Released The Innovative Achievements Of Optical Communication At The ECOC 2022 Conference

Recently, a number of optical communication technology innovation achievements of China Xinke Group were intensively presented at the world's top academic conference of optical communication ECOC 2022 (European Optical Communication Conference). The group's units published a total of 5 papers, a record number of articles, and it is one of the enterprises with the most selected articles in Chinese Mainland. Among them, there was a specially invited report (only 3 papers in Chinese Mainland) and two "Highly Scored Paper" (only 3 papers in Chinese Mainland were selected), involving high-speed silicon optical chips and devices, high-capacity long-distance optical transmission systems, high-speed passive optical access systems, data center network architecture and other fields. ECOC is a grand event of the global optical communication academic industry, and its series of achievements fully demonstrate the innovation advantages and technical strength of the whole industrial chain of China's SINOPEC optical communication.

In the field of high-speed optical chips and optical devices, Dr. Xiao Xi of China Sinovac delivered a special report entitled "High Baudrate Silicon Photonics for the Next generation Optical Communication" at the conference, comprehensively introducing the progress of China Sinovac in the performance verification of silicon optical transmission chips and systems in recent years. The single carrier net rate 666Gb/s (100Gbaud PDM-16QAM) silicon based coherent optical transmission device jointly developed with Light Express and Feisiling was released, which is the fastest silicon based coherent optical device released in China. Based on the self developed silicon optical chip, experiments such as 1.06Pbit/s single fiber transmission and 16Tbit/s, 10000km standard single-mode optical fiber transmission have been completed, fully demonstrating the huge potential of silicon optical chip in the next generation optical fiber transmission. In addition, in the oral report "Single Lane Beyond 400 Gbit/s Optical Direct Detection Based on a Sidewall Doped Ge Si Photodetector", the National Information Optoelectronics Innovation Center for the first time demonstrated a dual wall doped ultra-high speed silicon photodetector chip, which actually obtained a single channel 408Gb/s (136Gbaud PAM8) optical signal receiving function, setting an international record for the rate of silicon photodetectors, The research results were also included in the "Highly Scored Paper" of this conference.

In the field of large capacity long distance optical transmission, FiberHome (600498) participated in the optical transmission system experiment of China Mobile (600941) Research Institute in conjunction with ZTE and Changfei Optical Fiber (601869), and jointly published the report "Real Time 10- λ× 800-Gb/s Sub-Carrier-Multiplexing 95-GBd DP-64QAM-PCS Transmission Over 2018-km G.654.E Fibre With Pure Backward Distributed Raman Amplification”。 Focusing on such core technologies as super bandwidth, flexible scheduling and intelligent networking, this experiment, based on G.654E optical fiber and pure back Raman amplification system, realized the extreme transmission of 800G optical signals over 2000 kilometers for the first time in the industry, and the results were also selected as "Highly Scored Paper".

In the field of high-speed passive optical access, the State Key Laboratory of Optical Fiber Communication Technology and Network reported that "SOA Pre Integrated 200 Gb/s/ λ  PON Using High Bandwidth TFLN Modulator "shows a single wave ultra 200G direct tuning direct detection downlink optical access experiment based on a hybrid optical device scheme. The team adopts ultra-high bandwidth thin film lithium niobate modulator and semiconductor optical amplifier (SOA), which can still provide more than 29dB of power budget after 20km of single wave ultra 200Gb/s PAM-4 optical signal transmission, and provides an effective solution of low cost and low complexity for the next generation ultra-high speed optical access system and 6G mobile forward transmission.

In the field of data center network architecture, Lightfast Technology (002281), together with Alibaba Group, published the poster paper "SONIC Based Network Operating System for Open Whitebox Optical Transport Equipment", which demonstrated the industry's first open white box optical transmission equipment based on SONIC technology, including the network operating system of optical repeaters, optical amplifiers and protection switches. The system introduces an abstract interface of optical network line card, thus creating a unified and vendor independent line card extraction layer.