Title :
Harmonic signals from electroabsorption modulators for bias control
Author :
Li, G.L. ; Liu, Y.Z. ; Welstand, R.B. ; Sun, C.K. ; Chen, W.X. ; Zhu, J.T. ; Pappert, S.A. ; Yu, P.K.L.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., San Diego, La Jolla, CA, USA
fDate :
6/1/1999 12:00:00 AM
Abstract :
Harmonic signals reflected from electroabsorption modulators are measured and analyzed as a function of modulator bias. The second-harmonic signal exhibits a dip close to the bias where the maximum of RF link gain occurs, over a significant optical power range. Using an equivalent circuit analysis we show this is caused by the inherent electroabsorption effect. The second-harmonic signal can be exploited for dynamic self-bias control of electroabsorption modulators in analog fiber-optic links.
Keywords :
electro-optical modulation; electroabsorption; equivalent circuits; optical communication equipment; optical fibre networks; optical harmonic generation; RF link gain; analog fiber-optic links; bias control; dynamic self-bias control; electroabsorption modulators; equivalent circuit analysis; harmonic signals; inherent electroabsorption effect; modulator bias; optical power range; second-harmonic signal; Equivalent circuits; Optical coupling; Optical devices; Optical fiber polarization; Optical modulation; Optical waveguides; Photodetectors; RF signals; Radio frequency; Sun;
Journal_Title :
Photonics Technology Letters, IEEE
