World’s First True Green Semiconductor Laser Diode with output power of over 100mW
Up to now, a typical green laser is generated through wavelength conversion of infrared laser light from a light source using optical materials; however the light source is large and pricy. Furthermore, conventional GaN based green lasers have difficulties achieving sufficient luminosity as their performance is limited to an output power of several tens of milliwatt at a wavelength of 520 nm or less. To overcome these technical issues, Sumitomo Electric and Sony have jointly developed world’s first true green semiconductor laser diode with output power of over 100 mW at 530 nm by using a semi-polar GaN substrate by improving the production techniques. One of the distinguishing feature of the new laser diode is that a semi-polar {2021} GaN substrate plane is tilted 75 degrees in comparison to the conventional GaN crystal c-plane, resulting in sustainable production of homogenous indium based active layers, leading to the successful growth of a high quality light-emitting layer. Read more
Development of a New Micromachining Cutting Tools Equipped with Nano-Polycrystalline Diamond
Sumitomo Electric has announced the development of a nano-polycrystalline diamond which features single-phase nano-polycrystalline body which was synthesized by way of strong and direct bonding of fine diamond grains of several tens of nanometer level. This synthetic diamond was produced under higher temperature and pressure conditions than used for producing conventional synthetic single-crystal diamond. Read more
Development of High-Power Efficiency Remote Radio Head for Time Division LTE base Station
Sumitomo Electric has announced the development of a TRU2640, an advanced remote radio head (RRH) designed for use in Time Division LTE (TD-LTE) networks, complementing the release of Frequency Division Duplex (FDD) for LTE networks back in June 2011. The new RRH enjoys the compact lightweight body of less than 15 kg and 20L with a total output power of 40 W, designed to help the operators to reduce both the CAPEX as well as OPEX. Read more
Sumitomo Electric Installs and Tests its “Ecomarine” Ultraviolet Ballast Water Management System
Sumitomo Electric Industries has announced the installation and testing of its “Ecomarine” on Asuka II, a cruise ship operated by NYK Cruises in January of 2012. Ecomarine is an ultraviolet ballast water management system incorporating filter units which has been originally developed by Sumitomo Electric for separating large plankton and other aquatic organisms. The new system eliminates ant remaining small organisms with a medium-pressure ultraviolet system, offering a more environmentally friendly operation in comparison to other chemical free ultraviolet ballast water management systems. Read more
Development of Next-Generation Optical Fiber Fusion Splicer by Sumitomo Electric
Sumitomo Electric has released what is claiming to be the next generation of optical fiber fusion splicer. The new T-71C Direct Core Alignment Fusion Splicer was developed based on concept of “ultra-fast splicing in every environment.” The new splicer features a compact, lightweight, rugged and durable design capable of fastest splice cycle time. Read more
Development of Innovative Filtration Membrane for Trapping TEP in Water Pretreatment Step by Sumitomo Electric
TEP substances are gel particles which are present in high salinity seawater which can not be removed through sand filtration. TEP substances provide a fertile ground for bacteria and form a biofilm which fouls the reverse osmosis (RO) membrane form. The alternative is the ultrafiltration (UF) or microfiltration (MF) membranes capable of trapping TEP, however, accumulated TEP would clog the membrane causing the filtration flow rate to reduce significantly. This will result in use of large surface area membrane which would lead to higher cost of desalination. As a result of this, Sumitomo Electric has developed an innovative filtration membrane, which is called TEP Trap (TT) membrane capable of trapping TEP during the pretreatment step. Read more
Development of a new cBN Grade Material with World’s highest cBN Content for Cast-Iron and Sintered-Alloy Cutting
Sumitomo Electric Industries has successfully developed a new cBN grade “SUMIBORON BN7000” for general cast-iron and sintered-alloy cutting purposes. The new “SUMIBORON BN7000” has world’s highest cBN content. Cubic boron nitride or otherwise known as cBN is the second hardest material, after diamond. cBN is made treating CBN powder and a binder under high temperature and pressure. Sintered cBN is used for cutting tool material for high-speed machining of hard to cut ferrous metals, such as automobile steels as well as cast irons, where tougher and longer-life tool materials are in demand, especially in area of machining cast-iron engine blocks and sintered-alloy parts. Read more
Development of Porous Aluminum with Excellent Electrical Conductivity and Corrosion Resistance for use in Lithium-ion Batteries
Sumitomo Electric Industries has developed a new porous aluminum, “Aluminum-Celmet”. The Celmet in general feature high porosity of up to 98%, considerably higher than other porous metals, such as nonwoven metal fabric and foam metals. It holds a three dimensional mesh-like structure that forms interconnected, open and spherical pores, making it easy to process the Celmet into various shapes through cutting and stamping. Celmet has recently been used as a positive electrode current collector in hybrid vehicles nickel-hydrogen batteries. The new Aluminum Celmet is very light, with specific gravity which is one-third that of nickel. Read more
Development of Industry’s Lowest Power consumption Remote Radio Head for LTE Base Station
Sumitomo Electric has unveiled ground breaking super low power consumption remote radio head (RRH) for use in Long Term Evolution (LTE) base station. The new RRH has achieved a wireless output power of 80 W at 2.1 GHz at a low power consumption of less than 270 W, industry’s highest class efficiency. Read more
Production of Industry’s First 2-Inch Diameter Semipolar/Nonpolar GaN Substrates for Green Lasers
Sumitomo Electric has developed a production technology enabling the company to produce in a large scale industry’s first 2-inch diameter semipolar/nonpolar GaN (gallium nitride) substrates for green semiconductor lasers. The new production technology suppresses the piezoelectric effects on polarized substrates, resulting in an increase in devices luminous efficiency. Read more
