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Broad-band electronic linearizer for externally modulated analog fiber-optic links

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4 Author(s)
Chiu, Y. ; Optoelectron. Circuits & Syst. Lab., California Univ., Los Angeles, CA, USA ; Jalali, B. ; Garner, S. ; Steier, W.

Linearization of analog fiber-optic links using a novel CMOS linearization circuit is reported. A 17-dB suppression of the third-order intermodulation product (IMP3) has been achieved at the modulation index of 49.6 % and over a broad-band frequency range from dc to 1.3 GHz. In an experimental link with a noise floor of -124 dBm/Hz, the spurious free dynamic range (SFDR) is improved by 14 dB from 85 dB/Hz/sup 2/3/ to 99 dB/Hz/sup 2/3/.

Published in:

Photonics Technology Letters, IEEE  (Volume:11 ,  Issue: 1 )