An electroabsorption modulated laser (EML) is linearized by emulation and reversal of the nonlinear distortion using a companion EML inside an optoelectronic interferometer. Suppression of composite second-order and triple-beat signals to <-61 and <-63 dBc, respectively, have been achieved for a carrier-to-noise ratio (CNR) of 50 dB with a 77-channel loading of CATV carriers. Further performance enhancement can be expected through tailoring of device and component characteristics to suit the application.
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Yu et al. (1998) studied this question.
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