Here’s how it works, step by step:
The transmitter chip is made of four hybrid silicon lasers.
Light beams from the lasers each travel into an optical modulator.
The modulator encodes data onto the beams at 12.5Gbps.
The four beams are then combined and output to a single optical fiber, for a total data rate of 50Gbps.
At the other end of the link, the receiver chip separates the four optical beams and directs them into photo detectors.
The photo detectors convert data back into electrical signals.
Group items tagged
Intel: Light beams can replace electronic signals for future computers - SmartPlanet - 12 views
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The future of fast computing using laser light to transfer data 50Gb/second.
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a video explanation:
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“silicon photonics,”
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Silicon Photonics making 1Tb/sec goal of data transfer affordable and within reach of mass consumer markets. Two videos here explain how it works in less than 2 mins each.
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Confirming Einstein, scientists find 'spacetime foam' not slowing down photons from far... - 13 views
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One hundred years after Albert Einstein formulated the general theory of relativity, an international team has proposed another experimental proof. In a paper published today in Nature Physics, researchers from the Hebrew University of Jerusalem, the Open University of Israel, Sapienza University of ...
Startup turns carbon dioxide into fuels - 1 views
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Today, carbon dioxide (CO2) is a hot topic. Scientists around the globe are searching for ways to store, dispose of, or prevent the formation of the greenhouse gas, which is a major driver of global climate change. Liquid Light hopes to take this concept one step further and harness waste CO2 as a source of carbon to make industrial chemicals and fuels.
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Take CO2 and mix it in a water-filled chamber with an electrode and a catalyst. The ensuing chemical reaction converts CO2 into a new molecule, methanol, which can be used as a fuel, an industrial solvent or a starting material for the manufacture of other chemicals.
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Bocarsly likes to call the process "reverse combustion" because it is like running a burning reaction backwards. Instead of burning fuel and oxygen to produce CO2, the CO2 converts back into fuel and oxygen.
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Buckminster_Fuller - 1 views
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In 1927 Fuller resolved to think independently which included a commitment to "the search for the principles governing the universe and help advance the evolution of humanity in accordance with them... finding ways of doing more with less to the end that all people everywhere can have more and more."[
Thinking about solar? It's easier to start small | Green Tech - CNET News - 12 views
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Thinking about solar?
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Green Ray Solar this week is expected to announce UL certification for a solar panel that puts out alternating current, rather than direct current as most solar photovoltaic panels do today. AC panels can be simpler to install and wire together than traditional panels, which makes a piecemeal approach easier,
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Traditionally, solar panels are tied into a device called an inverter, which converts the direct current from panels into household alternating current. Strung together, several panels produce enough voltage to run an inverter which, sized for a rooftop array, is roughly as big as a computer monitor.
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CultureSciences-Physique - La vitesse de la lumière - 1 views
Onera - 3 views
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la lumière, observation, détection, identification
La propagation de la Lumière - 3 views
Scientists make quantum breakthrough - 25 views
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Scientists have demonstrated for the first time that atoms can be guided in a laser beam and possess the same properties as light guided in an optical communications fiber.
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Abstract Speckle patterns produced by multiple independent light sources are a manifestation of the coherence of the light field. Second-order correlations exhibited in phenomena such as photon bunching, termed the Hanbury Brown–Twiss effect, are a measure of quantum coherence. Here we observe for the first time atomic speckle produced by atoms transmitted through an optical waveguide, and link this to second-order correlations of the atomic arrival times. We show that multimode matter-wave guiding, which is directly analogous to multimode light guiding in optical fibres, produces a speckled transverse intensity pattern and atom bunching, whereas single-mode guiding of atoms that are output-coupled from a Bose–Einstein condensate yields a smooth intensity profile and a second-order correlation value of unity. Both first- and second-order coherence are important for applications requiring a fully coherent atomic source, such as squeezed-atom interferometry.
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Australian National University
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