K. Satzke et al., ULTRAHIGH-BANDWIDTH (42GHZ) POLARIZATION-INDEPENDENT RIDGE-WAVE-GUIDEELECTROABSORPTION MODULATOR BASED ON TENSILE-STRAINED INGAASP MQW, Electronics Letters, 31(23), 1995, pp. 2030-2032
Electroabsorption modulators with polarisation independence of chirp a
nd transmission (TE/TM sensitivity <0.4dB at 1550nm) over a wide wavel
ength range from 1540nm to 1560nm have been realised using tensile str
ained InGaAsP quantum wells. The fabricated devices show 42GHz modulat
ion bandwidth and 1.8V drive voltage, resulting in a high bandwidth-to
-drive-voltage ratio of 23.3GHz/V.