Detailed theoretical investigation and comparison of the cascadability of conventional and gain-clamped SOA gates in multiwavelength optical networks
- 1 November 1999
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 11 (11) , 1494-1496
- https://doi.org/10.1109/68.803090
Abstract
A detailed theoretical investigation of the cascadability of gain-clamped semiconductor optical amplifiers (GCSOAs) and SOAs in wavelength-division-multiplexed networks is presented. The analysis shows that the cascadability of SOAs is limited by degradation of both extinction ratio and ASE accumulation, whereas the cascadability for GC-SOAs mainly is limited by an accumulation of amplified spontaneous emission. This results in superior cascadability of GC-SOAs at a channel bit rate of 2.5 Gb/s in systems with up to at least 16 channels even when compared to short cavity SOA gates.Keywords
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