A novel process for fabricating tuneable lasers using micro-machined mirrors was developed by IST project TUNVIC. Part of a special two-part device, it allows variable wavelengths of emitted light that will ultimately allow increased volumes of data to be sent through a single optical fibre cable.
High-capacity data links between networked routers are part of the Internets backbone. These links use optical fibre cables through which information is sent using semiconductor lasers. By deploying several lasers of different wavelengths, it is possible to multiply the volume of data that can be sent through a single optical fibre. And with increased Internet traffic, ever increasing amounts of data will need to be exchanged.
"There is a clear need for this [TUNVIC] fabrication process," says Prof. Peter Meissner of the Technical University of Darmstadt and project coordinator. "For example, in WDM [wavelength division multiplexed] communication links, separate semiconductor lasers are used to generate light for each wavelength. Reliability is a key consideration in operational data links, and the system design incorporates pairs of lasers for each wavelength: one in use, the other as a hot standby. In the event of a failure, the standby laser can take over and maintain the link until the fault is fixed."
Tara Morris | IST Results
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The Institute of Semiconductor Technology and the Institute of Physical and Theoretical Chemistry, both members of the Laboratory for Emerging Nanometrology (LENA), at Technische Universität Braunschweig are partners in a new European research project entitled ChipScope, which aims to develop a completely new and extremely small optical microscope capable of observing the interior of living cells in real time. A consortium of 7 partners from 5 countries will tackle this issue with very ambitious objectives during a four-year research program.
To demonstrate the usefulness of this new scientific tool, at the end of the project the developed chip-sized microscope will be used to observe in real-time...
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
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