Abstract
We present a novel ultra-wideband (UWB) over fiber system that is compatible with wavelength-division-multiplexing passive optical network architecture based on a Fabry-Perot laser diode (FP-LD). Through external injection, the FP-LD operates as an active optical filter. By locating the optical carrier of a phase-modulated injection optical signal at one slope of the filter response, phase-modulation to intensity-modulation conversion is achieved, leading to the generation of a UWB signal having a power spectrum meeting the FCC-specified spectral mask. The proposed system is experimentally evaluated, with eye diagrams and bit-error rates measured. An error-free operation is achieved after 20-km single-mode fiber transmission for both cases where the FP-LD is placed in the center office and the remote site. The power penalty for the transmission is less than 3.2 dB.
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