Title :
Reduction of 3rd order intermodulation of a semiconductor laser by an adaptive low-cost predistortion circuit at 1.8 GHz
Author :
Steiner, G. ; Hunziker, S. ; Baechtold, W.
Author_Institution :
Lab. for Electromagn. Fields & Microwave Electron., Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
A low-cost adaptive predistortion circuit to reduce 3rd order intermodulation of semiconductor lasers has been designed. Using a microcontroller to adjust the control voltages the intermodulation has been reduced by 20 dB over the frequency range of 1750 to 1870 MHz.
Keywords :
intermodulation distortion; microcontrollers; optical transmitters; semiconductor lasers; 1750 to 1870 MHz; 3rd order intermodulation reduction; adaptive low-cost predistortion circuit; control voltages; microcontroller; optical transmitters; semiconductor laser; semiconductor lasers; Attenuators; Bandwidth; Circuits; Frequency; Masers; Optical noise; Phase shifters; Predistortion; Semiconductor lasers; Voltage;
Conference_Titel :
Nanostructures and Quantum Dots/WDM Components/VCSELs and Microcavaties/RF Photonics for CATV and HFC Systems, 1999 Digest of the LEOS Summer Topical Meetings
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-5633-0
DOI :
10.1109/LEOSST.1999.794743
