Title :
LiNbO3 Mach-Zehnder modulators with fixed negative chirp
Author :
Pisu Jiang ; O´Donnell, A.C.
Author_Institution :
Integrated Opt. Component Ltd., Witham, UK
Abstract :
Negative chirp modulation of optical transmitters is needed for the optimal performance of high bit-rate transmission in optical fiber systems operating at nonzero dispersion window at 1.5 μm. In this paper several approaches to achieving any fixed chirp value for LiNbO3 modulators are proposed, Experimental results of impedance matched devices on x-cut lithium niobate with chirp values of /spl plusmn/0.7 and /spl plusmn/1.0 are presented. By tuning the modulators bias point, the chirp value can be adjusted linearly around the designed value without degrading other performances.
Keywords :
chirp modulation; electro-optical modulation; impedance matching; lithium compounds; optical fibre dispersion; optical materials; optical transmitters; tuning; 1.5 mum; LiNbO/sub 3/; LiNbO/sub 3/ Mach-Zehnder modulators; chirp values; fixed negative chirp; high bit-rate transmission; impedance matched devices; modulator bias point tuning; nonzero dispersion window; optical fiber systems; optical transmitters; optimal performance; x-cut lithium niobate; Chirp modulation; Electrodes; Optical distortion; Optical fiber dispersion; Optical fibers; Optical transmitters; Optical tuning; Phase modulation; Radio frequency; System performance;
Journal_Title :
Photonics Technology Letters, IEEE
