Title :
Electroabsorption Modulators Suitable for 100-Gb/s Ethernet
Author :
Marek Chacinski;Urban Westergren;Bo Willen;Bj?rn Stoltz;Lars Thylen
Author_Institution :
Kista Photonic Res. Centre, R. Inst. of Technol., Stockholm
Abstract :
The design of a traveling-wave electroabsorption modulator (TWEAM) has been improved to decrease the drive voltage. The absorption layer was optimized and together with a novel segmentation of microwave design was introduced to increase the active modulator length. The resulting - 3-dBe bandwidth of fabricated devices was estimated to be 99 GHz. Extinction ratios of 10 dB back-to-back and 6.7 dB after transmission over 2.2-km long fiber were measured with an incident drive voltage of only 2 V peak to peak. This TWEAM performance is believed to constitute a new state of the art for modulators suitable for 100-Gb/s Ethernet with on-off keying.
Keywords :
"Ethernet networks","Bandwidth","Voltage","Optical transmitters","Optical reflection","Design optimization","Optical waveguides","Indium phosphide","Optical modulation","Impedance"
Journal_Title :
IEEE Electron Device Letters
DOI :
10.1109/LED.2008.2001970
