Abstract
A four-wave mixing (FWM) effect in a fiber-based optical parametric amplifier (FOPA) is reported. The novelty in the setup used is a ring cavity as opposed to the commonly used method of linear cavity. This reduces the required pump power, P p, for the amplification of the signals and also the generation of the idlers. The achieved gain for signal amplification is about 30 dB with a P p of 25 dBm. It has a flat gain response within range of 22 nm from 1570 nm to 1592 nm, with an average value of 28 dB within the 3 dB region. The average conversion efficiency is approximately −5 dB, with a peak value of −4 dB within the 2 dB region, with a range of 24 nm from 1576 nm to 1600 nm.
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