After years of development, 100G applications have formed a variety of technology types and alliances, whether it is the standardized ieee802.3bm or the 100G application model launched by SWDM, MSA and other organizations. There are many kinds of interfaces and application technologies supporting 100G, and each has its own characteristics. For the practical application of the data center, the distance between the connection points of most data centers does not exceed 500 meters. From a large number of 100G interface models, we have selected four types that are most likely to be used in data centers for further analysis for users who need to deploy 100G for reference. 1. 100GBase-SR4 100GBase-SR4 complies with the new standard ieee802.3bm issued in 2015. It uses 4 channels composed of 8-core multimode fiber for parallel transmission. Both multimode OM3 and OM4 optical fibers support 100G applications. The interface adopts 12 core MPO interface. The middle four core optical fiber does not need to be used. Each channel supports 25G. The transmission model is completely consistent with 100GBase-SR4 in ieee802.3ba. The optical transceiver adopts 100G QSFP28 SR4. This model can use conventional OM3 and OM4 multimode optical fibers to support 70m and 100m distances of 100G applications respectively. 2. 100GBase-SWDM4 SWDM (Short Wavelength Division Multiplexing) transmits four wavelength bands of optical signals over a single core of multimode fiber. The principle of WDM is similar to CWDM on single-mode, but SWDM is the first application of WDM technology on the short wavelength band of multimode fiber. It can be referred to the transmission principle model in the following figure: The main transmission window of traditional OM3 and OM4 multimode fiber is defined at 850nm. If SWDM technology is adopted, four windows are required to transmit optical signals, and the four wavebands still use VCSEL vertical cavity surface emitting lasers with high cost performance. In order to improve the overall bandwidth, the bandwidth of the new generation multimode fiber WBMMF(Wideband Multimode Fiber) is increased. In WBMMF, the highest bandwidth performance is around 880nm band, and the highest bandwidth point is higher than that of traditional OM4 multimode fiber. The SWDM technology can also use OM4 optical fiber as the transmission medium, but the transmission distance should be reduced accordingly. Compared with the SR4 model, SWDM4 requires only 25% of the optical fiber.3. 100GBase-PSM4 100GBase-PSM4 adopts single-mode optical fiber parallel transmission mode. Each 100G model adopts 8-core single-mode optical fiber to form four independent channels. The interface adopts 12 core MPO interface, in which the middle 4-core optical fiber of MPO interface is not enabled, and each channel supports 25G. The optical fiber transmission model is similar to 100GBase-SR4. The biggest difference is that PSM4 adopts single-mode optical fiber as the transmission medium and laser light source 1310 window. The optical transceiver also adopts QSFP28, and the connector adopts MTP / MPO single-mode APC. At present, 100GBase PSM4 has not been recognized by IEEE standardization organization, and is mainly promoted by PSM4 MSA alliance. 4. 100GBase-CWDM4 100GBase-CWDM4 is a 100G transmission model based on single-mode coarse wavelength division multiplexing(CWDM) technology. The fiber optic transceiver uses a single-mode laser light source with LC duplex interface, and supports four long wavelength bands of signal transmission on each core fiber, these four emission windows are 1271nm,1291nm,1311nm,1331nm, and each band transmits 25G. 100GBase-CWDM4 model is also used QSFP28 optical transceiver.Compare to traditional single-mode 10KM transceiver with high cost, the 2KM QSFP28 100G CWDM4 transceiver has a competitive price. 5. Summary Different types of data centers determine different needs. Not all data center users currently have the need to deploy 100G, so what types of users need to deploy 100G networks the most? To answer this question, we can divide data centers into two major categories, IDC (Internet Data Center) and EDC (Enterprise Data Center). Relatively speaking, some IDC data centers have more urgency to deploy 100G backbone networks, such as the data centers of large interconnection companies or carriers or some scaled cloud computing data centers. In terms of current price, although the wiring cost of multi-mode 100G based on SR4 is relatively high, the overall price has certain advantages, especially the price of SR4 optical transceiver is significantly lower than that of other types. Meanwhile, the price of optical transceiver based on CWDM single-mode is significantly higher than that of the other three types. The overall price difference between PSM4 and SWDM is small. As the SWDM alliance participated by a small number of optical transceiver manufacturers, it is not a public technology at present, and the market price remains relatively high temporarily. However, from the perspective of technology and cost composition, there is still a large room for price decline of SWDM, and this product has a certain market potential in the future.
Optical Transceiver QSFP28 100G QSFP28 3076 101 07/29/21RECENT POSTS
SHANGHAI, April 24, 2024 /PRNewswire/ -- The 2024 QS World University Rankings by Subject were released on April 10, 2024, with Antai College of Economics and Management (ACEM) of Shanghai Jiao Tong University (SJTU) achieving remarkable results. Three of its disciplines ranked among the global top 50, with "Statistics & Operational Research" making its debut in the top 40. Three disciplines of ACEM ranked among the global top 50 Key Highlights: "Statistics & Operational Research" ranked 36th globally and 3rd in mainland China, entering the top 40 for the first time since 2015. "Business & Management Studies" ranked 42nd globally and 3rd in mainland China, maintaining its position in the top 50 for the 9th consecutive year. "Accounting & Finance" ranked 47th globally and 3rd in mainland China, staying in the top 50 for the 7th year in a row. "Economics & Econometrics" ranked 57th globally and 4th in mainland China. In this year's rankings, 101 universities from mainland China were listed across 54 disciplines, placing the country third globally behind the United States and the United Kingdom. Shanghai Jiao Tong University had 11 disciplines in the global top 50, with Antai College contributing three of them. The QS World University Rankings by Subject are determined by five indicators: Academic Reputation, Employer Reputation, Research Citations per Paper, H-index, and International Research Network, which reflects the sustainable research partnerships established between universities and other higher education institutions.
OSTFILDERN, Germany, April 24, 2024 /PRNewswire/ -- INTAMSYS has officially signed a sponsorship contract with WorldSkills Lyon 2024, becoming the supplier of FFF 3D printing equipment for the Mechanical Engineering CAD and Additive Manufacturing Skills at the event. This partnership includes the provision of 47 INTAMSYS FUNMAT PRO 310 3D printers, software and filament supply, as well as training and technical support. This ensures that competitors can fully leverage advanced devices to showcase their skills and innovation. INTAMSYS Becomes 3D Printing Equipment Supplier for the WORLDSKILLS LYON 2024 COMPETITION This sponsorship agreement strengthens the global partnership forged by INTAMSYS with WorldSkills International in December 2023, underscoring INTAMSYS's enduring commitment to global skills education and talent development. Since its establishment in 1946, WorldSkills has been acknowledged as the world championship of skills due to its profound impact, with the WorldSkills Competitions standing as the gold standard for excellence in skills. As the 47th WorldSkills Competition, WorldSkills Lyon 2024 is scheduled to take place in Lyon, France, from September 10 to 15, 2024. Bringing together 1,500 elite talents from 65 countries and regions, the event will feature competitions across 59 skill categories, highlighting competitors' outstanding abilities and innovative potential. INTAMSYS, proud sponsor of WorldSkills Lyon 2024, is dedicated to fostering the next generation of innovators, engineers, and creators by advanced industrial 3D printing technology in the digital era, which serves as a catalyst for competitors to push the boundaries of design, manufacturing, and innovation. INTAMSYS 3D Printer: FUNMAT PRO 310 As the designated competition equipment, INTAMSYS FUNMAT PRO 310 3D printer revolutionizes desktop 3D printing with its industrial-grade performance, delivering exceptional printing capabilities for engineering plastics. Specifically optimized for full-size printing with engineering materials such as PC and ABS, this solution effectively prevents warping and deformation while accurately translating competitors' design concepts into reality. Moreover, INTAMSYS offers a diverse range of materials, including support materials, empowering competitors to explore possibilities for design innovation. INTAMSYS's sponsorship extends beyond hardware provision, encompassing comprehensive online training and technical support. This ensures that competitors from different countries can fairly grasp the fundamentals of printer. INTAMSYS's technical support team will prepare, calibrate, and test all equipment in advance, guaranteeing optimal performance throughout the competition. Franck le Roux, Executive Director of WorldSkills Lyon 2024 said: "We are pleased and honored to count INTAMSYS among the companies supporting WorldSkills Lyon 2024 and, through our movement, youth and trades. It is thanks to the involvement of our partners that we will succeed, from September 10th to 15th 2024, in showcasing the beauty of our trades and their usefulness to society." WorldSkills Lyon 2024 transcends mere skill competition; it stands as a global celebration of skills and vocational education. INTAMSYS's sponsorship will ensure the seamless execution of the event, fostering the development of global skill talent and making substantial contributions to the advancement of a more prosperous and inclusive society for the future. About INTAMSYSINTAMSYS is a global leader in industrial 3D printing, providing comprehensive additive manufacturing solutions and 3D printing services. Founded in 2016 by a team of experienced engineers, INTAMSYS has become a trusted partner for customers in a wide range of industries. Specializing in FFF technology, INTAMSYS focuses on delivering cutting-edge FUNMAT 3D printers capable of handling a diverse range of engineering materials, as well as its own suite of high-performance materials. With offices in Germany, the United States, and China, INTAMSYS maintains a global network of partners, ensuring seamless service delivery worldwide. For more information about INTAMSYS, please visit www.intamsys.com For more information about WorldSkills Lyon 2024, please visit our website: WorldSkills Lyon 2024 - 10 to 15 September (worldskills2024.com)
SINGAPORE, April 24, 2024 /PRNewswire/ -- The global imperative to improve access to and the quality of education continues to be paramount. In this regard, independent charity Vantage Foundation notes that India has made significant strides in its education system, with strong indicators pointing to the country's notable efforts to enhance learning outcomes. Vantage Foundation supports education activities of the UNESCO South Asia Regional Office in New Delhi in India Notably, Vantage Foundation recognises the pivotal role played by the United Nations Educational, Scientific, and Cultural Organization (UNESCO) in facilitating India's transition toward a digitally empowered society. UNESCO's profound insights, showcased through the State of Education Report (SOER) published by the UNESCO New Delhi Office, serve as a testament to its commitment to driving positive educational reforms. "UNESCO New Delhi produces our flagship report on the issues relating to the domain of education in India such as artificial intelligence in education, technical and vocational education, climate education etc.," explains Joyce Poan, Programme Specialist and Chief of Sector for Education, UNESCO New Delhi. "We collaborated with Vantage on the topic of artificial intelligence and education. These reports are useful to policymakers because they provide updated information and ten concrete recommendations, specific to India." "The SOER was the result of meticulous research by experts and designed for practical application. As such, we can bear witness to its tangible effects in India today," says Steven Xie, Executive Director of Vantage Foundation. "More importantly, its universal insights have the potential to transcend borders, offering far-reaching benefits that extend beyond India." Joyce also highlights the reports' wide-ranging use cases. "Our reports serve as an essential compilation of best practices, going beyond merely informing policymakers. They also represent an important repository of knowledge on the chosen topic, aimed at educating teachers, students, and the public alike," she explains. When asked about the future updates to its knowledge base, Joyce explains, "This year, UNESCO New Delhi will prioritise cultural and arts education in India. Our upcoming report will spotlight best practices from different Indian states and strategies for enhancing cultural and arts education across the country." Through their collaborative efforts, Vantage Foundation and UNESCO New Delhi exemplify a shared dedication to nurturing educational excellence and societal progress. These initiatives are crafted to inspire the next generation to strive for greater accomplishments, both within India and on a global scale. About Vantage Foundation Vantage Foundation is an independent charitable organisation launched at the McLaren Technology Centre in the UK with the support of the UN Refugee Agency (UNHCR), and the NEOM McLaren Extreme E team in 2023. For more information, please visit www.vantage.foundation
SHANGHAI, April 24, 2024 /PRNewswire/ -- SANY Group (SANY) is taking part in the road construction project in New Zealand's Bay of Plenty, the 12th road upgrading project in New Zealand as the country embarks on major upgrades to its transport infrastructure. SANY Supports New Zealand Tourism Through Infrastructure Transformation and Upgrading Globalization is an important element of SANY's development strategy, with the goal of building a better world. The group has been actively exporting high-end equipment to support urban upgrading and infrastructure projects around the world. Upon completion, the Bay of Plenty road will provide more convenient and safer transportation options to the local communities and tourists visiting the region. SANY has delivered three pieces of road construction equipment that are working in synchronization to guarantee both construction quality and efficiency: STR30C-8 lightweight double-drum roller: it's equipped with a Yanmar engine with robust power and offers the choice of front and rear, single and double drum vibration, which can be switched flexibly under any working conditions. The model's high compaction and high-density rolling quality can meet the strict requirements of highway construction. SSR180C-8 single-drum roller: the cabin is certified by Rops/Fops, standard configuration includes a reversing camera and full LED lights to provide a more comfortable and safer operating environment. SMG200C-8 motor grader: the robust model has a Meikang engine with 186KW power, coupled with direct-drive powershift transmission, smooth shifting, and quick response to ensure operation with precision, the easy-to-maintain rotary support device also reduces cost and boosts reliability and durability. As a leading supplier of complete road construction equipment, SANY has built a comprehensive product portfolio of five core categories – pavers, rollers, graders, milling machines, and asphalt mixing plants. In 2021, SANY's hydraulic roller, asphalt plant, and pavers had the highest market share in China, according to the statistics from the China Construction Machinery Industry Association (CCMIA). "With short winters and long summers, the Bay of Plenty is one of New Zealand's sunniest and most popular vacation destinations. Its breathtaking natural beauty and unique culture attract numerous tourists from around the world, and we're delighted to support the construction of the roads with our products to help build a better Bay of Plenty, and we look forward to participating in more projects that will create better tourism experiences for visitors from all over the world," said by Jat Zhang, Country General Manager of SANY. SANY Supports New Zealand Tourism Through Infrastructure Transformation and Upgrading
