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posted in November 2002
Commercialization Issues of MEMS/MST/Micromachines: An Updated Industry Report Card
Product News  
11/13/2002   1 comment
Like virtually all other electronic-industry segments, microelectromechanical Systems (MEMS) did not escape the economic slowdown of 2002. Roger Grace, President of Roger Grace Associates, presents a "report card" on the MEMS industry, comparing where it is now versus 2001, and explains the reasons certain MEMS parameters received the grades they did.
A Beam Deflecting System For Holographic Storage Fast Data Reading
Design How-To  
11/5/2002   Post a comment
In this article, Renaud Kiefer and associates describe a compact addressing system for memory reading which combines micro-mirrors (or optical MEMS: microelectromechanical systems), acousto-optics, and gratings. MEMS are more convenient for this application than scanners such as galvanometric, oscillatory, or polygon mirrors due to the large mechanical deflection angles and high level of integration achievable with MEMS devices.


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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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