Citation
Mahdi, Mohd Adzir and Kharraz, Osayd M. and Supa'at, Abu Sahmah M. and Abas, Ahmad Fauzi and Alresheedi, Mohammed Thamer
(2018)
Acceleration of carrier lifetime in gain-clamped semiconductor optical amplifiers.
IEEE Photonics Journal, 10 (5).
art. no. 7104613.
pp. 1-13.
ISSN 1943-0647; ESSN: 1943-0655
Abstract
A new method to accelerate the carrier lifetime in semiconductor optical amplifiers (SOAs) is experimentally demonstrated. The four-wave mixing (FWM) effect is induced without recourse to external optical light sources. A pair of fiber Bragg gratings is utilized to generate pre-spectral sliced seed light channels as FWM inputs, by reflecting the backward amplified spontaneous emission from the SOA in a gain-clamped configuration. The theory predicts a three times shorter carrier lifetime, compared to coherent inputs in a travelling-wave arrangement. Furthermore, this method can be a more accurate measure of the nonlinear parameters of SOAs rather than conventional techniques, owing to the polarization-independent nature of the corresponding incoherent products.
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