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40-GHz polymer electrooptic phase modulators

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6 Author(s)
Wenshen Wang ; Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA ; Datong Chen ; H. R. Fetterman ; Yongqiang Shi
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A broad-band high-frequency traveling wave electrooptic phase modulator made from stable nonlinear optical polymers has been tested. Using a 1.319-μm light source, single-mode operation was achieved with high-input optical power, resulting in improved modulation depths and signal-to-noise ratios. The high-frequency optical modulation was observed up to 40 GHz using external microwave mixers. Direct optical-heterodyne detection of electrooptic phase modulation has also been demonstrated with high sensitivity at 40 GHz. The devices were tested with 105 W/cm2 power density for 21 hours, and have showed no observable decay in nonlinearity.

Published in:

IEEE Photonics Technology Letters  (Volume:7 ,  Issue: 6 )