Title :
Spur-free dynamic range measurements of a fiber optic link with traveling wave linearized directional coupler modulators
Author :
Schaffner, James H. ; Lam, Juan F. ; Gaeta, C.J. ; Tangonan, Gregory L. ; Joyce, Robert L. ; Farwell, Mark L. ; Chang, William S C
Author_Institution :
Hughes Res. Labs., Malibu, CA, USA
Abstract :
Two-tone testing was performed on a laboratory fiber optic link with LiNbO/sub 3/ traveling wave linearized directional coupler modulators. The third-order distortion was measured at 500 MHz and 1000 MHz, and the spur-free dynamic range was determined. Two modulator configurations, with either one or two passive bias sections, were tested and the results were compared with measurements of simple directional coupler modulators. A 9.5-11 dB improvement in the dynamic range was found in the links employing the linearized modulators.<>
Keywords :
directional couplers; electro-optical devices; integrated optics; optical couplers; optical fibre testing; optical links; optical modulation; 1000 MHz; 500 MHz; LiNbO/sub 3/; fiber optic link; linearized directional coupler; passive bias sections; spur-free dynamic range measurements; third-order distortion; traveling wave modulators; Chirp modulation; Directional couplers; Distortion measurement; Dynamic range; Electrodes; Laboratories; Linearity; Optical distortion; Optical fibers; Optical noise;
Journal_Title :
Photonics Technology Letters, IEEE
