Abstract:
A fiber ring laser with a semiconductor optical amplifier (SOA) as active component is investigated using a hybrid model. The SOA is studied using a newly-established 4th...Show MoreMetadata
Abstract:
A fiber ring laser with a semiconductor optical amplifier (SOA) as active component is investigated using a hybrid model. The SOA is studied using a newly-established 4th-order time-domain algorithm, which includes the nonlinear effects of carrier depletion and recovery, as well as gain dispersion. Comparison with existing analytical results shows that this algorithm can attain a relative precision of a few parts per thousand (∼10−3) or better, which is essential for predicting waveform of optical pulse. The transmission in other parts of the ring laser is carried out in frequency domain. Our model predicts a pulse width of ∼10ps with a 10GHz external modulation, and reveals higher stability, better waveform, as well as easier locking conditions with dispersion-compensating fiber (DCF). A diffraction-limited Gaussian pulse train can be obtained, with its carrier frequency effectively red-shifted due to band-pass filter. All these are in good agreement with our experimental observations.
Published in: 2012 8th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP)
Date of Conference: 18-20 July 2012
Date Added to IEEE Xplore: 17 September 2012
ISBN Information: