Title :
Optimum operating point of electroabsorption modulators for 10-Gbit/s transmission
Author :
Cartledge, J.C. ; Christensen, B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont., Canada
Abstract :
The performance of l0-Gbit/s transmission systems that use electroabsorption modulators is a strong function of the modulator chirp, average transmitted optical power and optical extinction ratio. The chirp of an electroabsorption modulator depends on the electro-optic properties of the absorption layer in the p-i-n waveguide. As the reverse bias voltage is decreased over the operating range of the device, the a-parameter, which quantifies the modulator chirp, typically decreases and is either positive or changes from positive to negative. To determine the optimum bias and modulation voltages, a model for the electroabsorption modulator is used that is based on measured results for the dependence of the absorption and on applied voltage
Keywords :
chirp modulation; electro-optical modulation; electroabsorption; optical communication equipment; optimisation; 10 Gbit/s; Gbit/s transmission; absorption layer; applied voltage; average transmitted optical power; electro-optic properties; electroabsorption modulators; modulation voltages; modulator chirp; optical extinction ratio; optimum bias; optimum operating point; p-i-n waveguide; Chirp modulation; Fiber nonlinear optics; Nonlinear optics; Optical modulation; Optical receivers; Optical sensors; Optical waveguides; Propagation losses; Quantum well devices; Voltage;
Conference_Titel :
Optical Fiber Communication. OFC 97., Conference on
Conference_Location :
Dallas, TX
Print_ISBN :
1-55752-480-7
DOI :
10.1109/OFC.1997.719813
