MICROWAVE POWER AMPLIFICATION APPARATUS AND METHOD THEREOF

摘要

Period-one nonlinear dynamics of semiconductor lasers are utilized to provide an apparatus for photonic microwave power amplification in radio-over-fiber links through optical modulation depth improvement. The microwave power amplification apparatus includes a microwave-modulated optical signal generation module and a microwave power amplification module. The amplification capability of the present microwave power amplification apparatus covers a broad microwave range, from less than 25 GHz to more than 60 GHz, and a wide gain range, from less than 10 dB to more than 30 dB. The microwave phase quality is mainly preserved while the microwave power is largely amplified, improving the signal-to-noise ratio up to at least 25 dB. The bit-error ratio at 1.25 Gb/s is better than 10−9 and a sensitivity improvement of up to at least 15 dB is feasible.

主权项

1. A microwave power amplification apparatus, comprising:
an optical input, wherein the optical input is an optical signal carrying a power-to-be-amplified microwave signal and the optical input has at least one modulation sideband; an optical output, wherein the optical output is an optical signal carrying a power-amplified microwave signal; and a microwave power amplification module comprising a microwave-power amplification laser to convert the optical input into the optical output using period-one nonlinear dynamics of the microwave-power amplification laser, wherein a typical output of the microwave-power amplification laser without the optical input is a continuous wave of one single frequency, and wherein an optical power and a carrier frequency of the optical input are adjusted so as to place the microwave-power amplification laser in the period-one nonlinear dynamics.