Lightwave transmission in silica optical fibers has been demonstrated in four wavelength windows, 0.8 μm, 1.3 μm, 1.5 μm, and 1.6 μm (L-band). This experiment, using AllWave™ fiber, opens a fifth wavelength window namely, the 1.4 μm region.
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.