Bell Labs demos CMOS - based optical equalizer News & Analysis 3/28/2007 Post a comment Researchers at Alcatel-Lucent's Bell Labs have developed a tunable optical waveguide equalizer made entirely on a CMOS process. They say this is a "significant step" towards high-density, low-cost chips that combine electronics and photonics on the same die and targeted at next generation optical network architectures.
BT, Huawei Look Alive at C5 News & Analysis 3/26/2007 Post a comment The cream of European telecom is gathered here in Milan for the C5 event this week, where Telecom Italia SpA is acting as the carrier host.
White LEDs warm up for indoor lighting Product News 3/21/2007 1 comment Cree Inc. has increased the brightness and efficiency of its XLamp XR-E and XLamp XR-C white light-emitting diodes by more than 20 percent, enough to making them suitable for indoor "warm white" lighting applications.
OPTEK, IRC deliver LED design kit Product News 3/20/2007 Post a comment OPTEK and IRC have developed a LED design kit for solid-state lighting designers. The kit features IRC's Anotherm aluminum substrates and OPTEK's 1-watt energy-efficient LEDs. Kits include lighting modules, assemblies, components and accessories.
OKI to sample FTTH laser with 15 mW optical output Product News 3/14/2007 Post a comment OKI has developed a 1490-nm wavelength semiconductor laser that can transmit up to 2.5 Gbits/s at an output level of 15 mW, which is said to be the industry's highest level over a temperature range of -40 degrees C to 85 degrees C.
Avanex sells majority stake in French III-V fabs News & Analysis 3/2/2007 Post a comment Optical components and modules maker Avanex Corporation is selling a 90 percent stake in its French subsidiary, which makes Indium Phosphide and Gallium Arsenide devices, to Global Research Company, a société à responsibilité limitée, owned by Alexandre Krivine, and to the current management of Avanex France S.A.
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.
January 2016 Cartoon Caption ContestBob's punishment for missing his deadline was to be tied to his chair tantalizingly close to a disconnected cable, with one hand superglued to his desk and another to his chin, while the pages from his wall calendar were slowly torn away.122 comments