POET chips are GaAs.And I was under the impression they were silicon. HMMMMM
Whatever the price, GaAs makers are finding customers who arewilling--or compelled--to pay the piper. To handle the surge in trafficin wireless phones, cell-phone frequencies are being jacked up, from 900megahertz to 1.9 gigahertz in tomorrow's so-called personalcommunication services (PCS). At those frequencies, GaAs is essentiallythe only choice. Already, all new cell phones sold in the U.S. byEricsson, the third-largest supplier after Motorola and Nokia, useAnadigics chips, says Nils Rydbeck, vice-president of Ericsson NorthAmerica. ``It started a year ago, and we're now using GaAs on a largescale overseas as well.''
POET’s technology platform for optoelectronic integration exploits the optoelectronic and electronic
behaviors of Gallium Arsenide (GaAs) semiconductor material. One of the benefits of this material, from
a space electronics perspective, is that GaAs is significantly less susceptible to x-ray and gamma-ray total
integrated dose (TID) radiation. GaAs is the long-standing choice for high-frequency (e.g. RF) devices
and circuits, although, GaAs digital devices do not provide the performance that Metal Oxide