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Telecoms ♦ news digest crystals with different compositions.”


“These are very different materials, with different electronic properties and band gaps. Putting one on top of the other would give us a new type of material that we call van der Waals solids,” Ajayan adds. “We could put them together in whatever stacking order we need, which would be an interesting new approach in materials science.


Computations were performed on Rice’s DAVinCI system and at the Cyberinfrastructure for Computational Research, both funded by NSF.


The Welch Foundation, the National Science Foundation (NSF), the U.S. Army Research Office, the U.S. Office of Naval Research, the Nanoelectronics Research Corporation and the Department of Energy supported the work.


This work is described in detail in the paper, Vapour phase growth and grain boundary structure of molybdenum disulphide atomic layers,” by Sina Najmaei et al in Nature Materials, (2013) published online on 9th June 2013. nmat3673


GigOptix continues to enhance its enabling device product portfolio offering to become the de-facto leading supplier of choice to the AOC and pluggables manufacturers. With a family of ten products available today for 1 to 12 channels at data rates ranging from 5Gbps to 300Gbps, we continue to demonstrate our strong leadership position in providing advanced chipsets for high speed data connectivity links in next generation data centres”


“The data centre high speed connectivity is one of the fastest growing segments of the optical data streaming infrastructure, as larger data centres are being built to support the exponential data transfer demand through the Cloud. To meet this expanding need for speed and bandwidth, the industry is rapidly converting from existing copper wire technology to fibre optics, where GigOptix obviously plays a major role in the supply chain. Based on this robust outlook, we remain confident that the demand for our datacom high speed components will continue to rapidly grow over the next few years,” adds Dinu.


DOI:10.1038/


GigOptix’s broad optical interconnect portfolio includes 1, 4 and 12 channel VCSEL driver and TIA arrays for speeds of 5, 10, 14, 16, 25, and 28Gbps.


GigOptix 40 & 100Gbps interconnects are on Cloud 9


The supplier of III-V based chip-sets enables high speed optical interconnects in data centres for short and long reach high speed connectivity applications


GigOptix is reaffirming its strength in 40Gbps/100Gbps high-speed optical interconnects for emerging Cloud and Web 2.0 applications in next generation data centres.


“With the ever growing demand for our high-speed devices for optical links using pluggables and active optical cables (AOC), and the recent consolidation of some other merchant component manufacturers into vertically integrated system manufacturers, GigOptix is clearly the largest independent supplier of chip-sets to enable high speed optical interconnects in the data centres for short reach (SR) and long reach (LR) high speed connectivity applications,” says Raluca Dinu, General Manager and Vice President of the Optics Product Line at GigOptix, Inc.”As of today, GigOptix has shipped millions of VCSEL driver and transimpedance amplifier (TIA) devices and has delivered double digit quarterly revenue growth over the last two years,”


He continues, “As data centres scale to offer more optical interconnect applications, services, and storage,


From volumes in Light Counting’s April 2013 Market Forecast for Data Centre Optical Transceivers report, the revenue for drivers and TIAs needed for all the AOC high speed optical data centre links, which include both SR and LR applications, is estimated to grow 3 fold from about $40 million today.


This growth rate does not include the expected use of TIAs and drivers for the next generation of consumer electronics and gesture recognition devices, which would further boost demand for these technologies.


M/A-COM’s mixer mixes lots of technologies


The device employs GaAs pHEMT technology and offers a low cost compact space-saving broadband solution


M/A-COM Technology Solutions Inc. (MACOM) has introduced a broadband sub-harmonic pumped mixer, the MAMX-011009.


The device is used for cost sensitive applications covering the 14-32 GHz frequency range and IF frequencies from DC-7 GHz.


The MAMX-011009 utilises a variety of technologies which include GaAs pHEMT, silicon HMIC and hybrid


July 2013 www.compoundsemiconductor.net 101


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