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Content tagged with Optoelectronic
posted in August 2001
Planar turn display technology to optical comms in move away from military
News & Analysis  
8/14/2001   Post a comment
Information display system maker Planar Systems is quitting the military CRT display business in a plan that will see the company move into the communications component business using technology derived from its electroluminescent displays.
Intense Photonics wins Scottish Executive funding
News & Analysis  
8/6/2001   Post a comment
Intense Photonics has been given a £450000 SpurPlus award by the Scottish Executive. The grant will be used to develop an optoelectronic packet switch.
NTT launches 100Mbit/s fibre-optic service
News & Analysis  
8/3/2001   Post a comment
Nippon Telegraph and Telephone Corp (NTT) launched a fibre-optic service in Japan this week capable of supporting 100Mbit/second transmissions, opening the way for full-scale fibre to the home
NRZ and RZ Pulse Forms in WDM Systems with Distributed Fiber Raman Amplifiers
News & Analysis  
8/2/2001   Post a comment
Exploding communications traffic is fueling the use of optical WDM systems and the wide-band optical amplifiers used in such systems. Minhui Yan and others from Shanghai Jiao Tong University, China, discuss the theory behind low-noise fiber Raman amplifiers and how these amplifiers have different effects on NRZ and RZ pulses.
Whopping $51bn loss at JDS as acquisitions turn sour
News & Analysis  
8/1/2001   Post a comment
JDS Uniphase, the optical components company, reported a $51bn loss for its full year. It also announced 7000 more job cuts, having already shed 9000 this year.
Clare, Analog Devices to integrate high-voltage circuits on MEMS devices
News & Analysis  
8/1/2001   Post a comment
Clare Inc announced a development partnership with Analog Devices Inc to create high-voltage IC technology for fibre optical networks that use integrated microelectromechanical systems (iMEMS)


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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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