|By JCN Newswire||
|February 3, 2014 12:09 AM EST||
Tokyo, Feb 3, 2014 - (JCN Newswire) - Fujitsu Laboratories Ltd. and Furukawa Electric Co., Ltd. today announced that they have collaborated to develop a new multi-fiber optical connector that enjoins and aligns multiple optical fibers for optical interconnects(1).
The conventional method of connecting optical fibers requires high-precision polishing that aligns the tips of the fibers, making the cost of this process considerable. Fujitsu Laboratories and Furukawa Electric have developed a connector that can accommodate different lengths of optical fiber with a spring mechanism that obviates the need for this polishing process, slashing by more than half the cost required to connect optical fibers.
This new jointly developed connector achieves performance on par with conventional connectors while simplifying the task of installing high-capacity optical interconnects in a server. It is anticipated that this technology will increase data transmission speed between boards, increasing overall server performance.
This technology is being presented in detail at SPIE Photonics West 2014, from February 1, 2014, in San Francisco.
In recent years, the volume of data transmission inside servers has grown in line with greater server processing performance. Today, high-speed data speeds of 25Gbps or greater are required for transmissions between the CPUs, and CPUs and memory. Conventional electrical wiring suffers signal degradation due to attenuation at high speeds, making high-speed transmission between server boards difficult even over short distances. Optical fiber, which suffers little signal degradation, has therefore led to much attention being focused on optical interconnects.
Using optical interconnects for communications between server boards requires numerous multi-fiber connectors, each of which connects and aligns multiple optical fibers to allow for parallel signal transfers. The large volume required, however, leads to the problem of high costs when deploying optical interconnects inside servers.
With existing multi-fiber connectors, the fibers need to be fixed into the connector and then have their fiber-end faces precisely polished so that their tips align flat for low-loss connections. However, as the polishing process needs to be performed for each connector, the overall cost is high. The problem has been the lack of having a simple optical connector that offers the benefits of low signal loss without requiring costly polishing.
About the Technology
Fujitsu Laboratories' design technology and Furukawa Electric's manufacturing technology both contributed to the development of a multi-fiber optical connector that can easily be used inside servers.
Key technologies underlying the new connector design are as follows.
- A spring mechanism for optical connectors that slightly deforms when connecting optical fibers. This allows for deforming in the optical connector itself to introduce minute bends into the optical fibers as a way to accommodate for differences in their lengths, so that their tips align.
- Laser-processing the tips of the optical fibers results in surfaces equivalent to those achieved through polishing, so that optical fibers can align flush without gaps.
The combination of these technologies obviates the need for polishing and results in optical-fiber connections with signal loss levels on par with existing multi-fiber connectors (0.2 dB or less).
The newly developed optical connector obviates the need for costly polishing, halving the cost while achieving performance on par with existing technology. Fujitsu Laboratories and Furukawa Electric jointly developed this optical connector for use on boards, and with an optical connector housing that accommodates four optical connectors in a compact space(2), this design allows for as many as 96 optical fibers to be connected.
This technology will enable the cost of installing optical interconnects between boards inside servers to be lowers, and increase overall server performance in the future.
Fujitsu Laboratories and Furukawa Electric are continuing development with the goal of applications in servers around 2016. This technology need not be limited to internal server communications; it also has additional potential uses for connecting optical fibers between rack-mounted devices.
(1) Optical interconnect: A technology that makes connections by replacing conventional electrical wiring with optical lines. This results in lower noise and higher speed.
(2) Optical connector housing that accommodates four optical connectors in a compact space: See press release dated November 9, 2011: "Fujitsu Laboratories and Furukawa Electric Develop High-Speed Optical Interconnect Technology" www.fujitsu.com/global/news/pr/archives/month/2011/20111109-04.html
For more information:
See press release dated May 31, 2012: "Fujitsu Laboratories Develops Technology for Compact Optical Transceivers that Double Data Transmission Speeds to 25 Gbps" www.fujitsu.com/global/news/pr/archives/month/2012/20120531-01.html
About Fujitsu Laboratories
Founded in 1968 as a wholly owned subsidiary of Fujitsu Limited, Fujitsu Laboratories Ltd. is one of the premier research centers in the world. With a global network of laboratories in Japan, China, the United States and Europe, the organization conducts a wide range of basic and applied research in the areas of Next-generation Services, Computer Servers, Networks, Electronic Devices and Advanced Materials. For more information, please see: http://jp.fujitsu.com/labs/en.
About Furukawa Electric Co., Ltd.
Furukawa Electric is the global leader in optical communication. Founded in 1884, Furukawa Electric has been manufacturing leading edge products for more than 100 years and continues to serve our customers with industry leading technology in the 21st century. For more information, please see http://www.furukawa.co.jp/index.htm.
About Fujitsu Limited
Fujitsu is the leading Japanese information and communication technology (ICT) company offering a full range of technology products, solutions and services. Approximately 170,000 Fujitsu people support customers in more than 100 countries. We use our experience and the power of ICT to shape the future of society with our customers. Fujitsu Limited (TSE: 6702) reported consolidated revenues of 4.4 trillion yen (US$47 billion) for the fiscal year ended March 31, 2013 For more information, please see www.fujitsu.com.
Source: Fujitsu Limited
Fujitsu Limited Public and Investor Relations www.fujitsu.com/global/news/contacts/ +81-3-3215-5259 Technical Contacts: Fujitsu Laboratories Ltd. Devices & Materials Laboratories Photonic Devices Lab. E-mail: [email protected]
Copyright 2014 JCN Newswire. All rights reserved. www.japancorp.net
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