NEC Develops Vertical-Cavity Surface-Emitting Laser Boasting World's Fastest Operation Speed of 25 Gbps/Ch; Significant step toward realization of ultra-high-speed optical interconnection for next-generation supercomputing systems14.Tokyo, Japan, Mar 7, 2006 - (JCN JCN Japan Corporate News JCN Journal of Cognitive Neuroscience JCN Journal of Cardiovascular Nursing JCN Journal of Christian Nursing JCN Job Control Number JCN Journal of Child Neurology JCN joint communications network (US DoD) Newswire) - NEC (NEC Corporation, Tokyo, www.nec.com, www.necus.com) An electronics conglomerate known in the U.S. for its monitors. In Japan, it had the lion's share of the PC market until the late 1990s (see PC 98). NEC was founded in Tokyo in 1899 as Nippon Electric Company, Ltd. Corporation today announced the successful development of a vertical-cavity surface-emitting laser The vertical-cavity surface-emitting laser (VCSEL; [v'ɪxl]) is a type of semiconductor laser diode with laser beam emission perpendicular from the top surface, contrary to conventional edge-emitting semiconductor lasers (also in-plane (VCSEL (Vertical Cavity Surface Emitting Laser) Pronounced "vixel." A type of laser diode that emits light from its surface rather than its edge. A VCSEL's circular beam is easy to couple with a fiber, and due to its surface-emission architecture, can be tested *) that boasts the world's fastest 25 gigabit per second (Gbps) per channel (ch) operation speed. It subsequently achieves ultra-high-speed optical interconnection among LSI LSI: see integrated circuit. (Large Scale Integration) Between 3,000 and 100,000 transistors on a chip. See SSI, MSI, VLSI and ULSI. chips/boards, representing a major step toward the realization of next-generation supercomputing systems. NEC joined "Optical Interconnection Research for Ultra-Fast Computers" in April, 2005. This research is part of the "Elementary-Technology Research for Future Supercomputers" project, which is being supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology. The realization of a high-speed and highly reliable VCSEL has been long sought after in the race to develop next-generation supercomputing systems. A transmission speed of over 20 Gbps will be required for optical interconnection among LSI chips in supercomputers in 2010. The newly developed VCSEL has great potential in the field of optical interconnection because it can double conventional transmission speeds. In particular, this device is essential to the enhancement of data transmission speeds between CPUs and memories, which is currently the bottleneck hindering the calculation speed of next-generation supercomputing systems. This development is expected to contribute to the rapid progress of the performance of next-generation supercomputing systems. The features of the newly developed high-speed VCSEL are as follows: 1. High-speed operation is achieved by adopting optimal material and a structure with light-emitting layers to improve the efficiency of electro-optics transition and reducing resistance and capacitance through the introduction of a new design and process. 2. Enhanced reliability of the VCSEL will be realized through the utilization of material that prevents crystal degradation. The largest issue in current supercomputer performance is the data transmission speed among LSI chips or boards in comparison to the data processing data processing or information processing, operations (e.g., handling, merging, sorting, and computing) performed upon data in accordance with strictly defined procedures, such as recording and summarizing the financial transactions of a speed in LSI chips. Replacing the electrical signals with optical signals is a logical move as optical interconnection enables high-speed operation and high-density mounting. Among semiconductor lasers, VCSEL is advantageous since it can operate at low power and carry out high-density integration. Therefore, the features of the newly developed VCSEL are very beneficial to next-generation supercomputing systems, in which high-density optical interconnection will be carried out between CPUs and memories. On the other hand, 850-nm-range VCSELs have become popular in short-range optical communications Optical communications The transmission of speech, data, video, and other information by means of the visible and the infrared portion of the electromagnetic spectrum. such as the Ethernet*. The main transmission speed is less than 2.5 Gbps, but 10 Gbps transmission is also commercially available. However, there are several issues with current 850-nm-range VCSELs, including operation speed limitations of 10 Gbps due to overheating Overheating An economy that is growing very quickly, with the risk of high inflation. caused by an increase in current density for faster operation, or decreased reliability due to defects in the crystal. By employing original materials and an improved structure, NEC's newly developed VCSEL realizes highly efficient electro-optic transition and high-speed operation over 20 Gbps. In the future, the use of optical interconnection is expected to spread not only to servers and PCs, but also to intelligent home networks, portable terminals and to the automotive and medical fields, owing to owing to prep. Because of; on account of: I couldn't attend, owing to illness. owing to prep → debido a, por causa de its many merits including high-speed and low-noise operation. This research breakthrough will significantly contribute to expansion in this field. The features of the developed VCSEL are as follows: Wavelength/Material: 1070 nm / InGaAs (Conventional: 850 nm / AlGaAs) Modulation Speed: 25 Gbps (Conventional: Up to 10 Gbps) Threshold Currents: 0.33 mA @ 25 degrees Celsius, 0.58 mA @ 85 degrees Celsius Operation Currents: 7 mA @ 25 Gbps operation NEC will continue to carry out extensive research on this outstanding optical interconnection technology towards the realization of world-class high-density/ high-speed optical transmission technology. The results of this research will be presented at the Optical Fiber Communication Conference & Exposition 2006, being held in Anaheim, California “Anaheim” redirects here. For Annaheim, see Annaheim, Saskatchewan. Anaheim is a city in Orange County, California, located 28 miles southeast of Los Angeles. , U.S.A. from March 7 to 10, 2006. * VCSEL: Vertical-cavity surface-emitting laser. VCSEL emits its coherent light co`her´ent light n. 1. (Physics, Optics) Light in which the phases of all electromagnetic waves at each point on a line normal to the direction of the the beam are identical. perpendicular to the substrate. VCSEL has several advantages over conventional edge-emitting laser diodes. VCSEL is smaller, consumes less power and operates faster. Furthermore, there are great expectations for VCSEL as a light source to enable mass production and high-density 2D array. ** Ethernet: The most widely-installed local area network (LAN (Local Area Network) A communications network that serves users within a confined geographical area. The "clients" are the user's workstations typically running Windows, although Mac and Linux clients are also used. ) technology. Specified in a standard, IEEE (Institute of Electrical and Electronics Engineers, New York, www.ieee.org) A membership organization that includes engineers, scientists and students in electronics and allied fields. 802.3, Ethernet was developed by Digital Equipment Corporation (DEC), Intel, and Xerox. Source: JCN http://www.japancorp.net Contact: hg Copyright [c] 2006 JCN Newswire. All rights reserved. A division of Japan Corporate News Network K.K. |
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