Title :
Detailed theoretical investigation and comparison of the cascadability of conventional and gain-clamped SOA gates in multiwavelength optical networks
Author_Institution :
Res. Center COM, Tech. Univ. Denmark, Lyngby, Denmark
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 :
laser theory; optical fibre networks; semiconductor device models; semiconductor optical amplifiers; superradiance; telecommunication channels; wavelength division multiplexing; ASE accumulation; amplified spontaneous emission; cascadability; channel bit rate; extinction ratio; gain-clamped SOA gates; gain-clamped semiconductor optical amplifiers; multiwavelength optical networks; short cavity SOA gates; superior cascadability; theoretical investigation; wavelength-division-multiplexed networks; Communication switching; Crosstalk; Degradation; Distributed Bragg reflectors; Distributed amplifiers; Extinction ratio; Optical noise; Optical switches; Semiconductor optical amplifiers; Spontaneous emission;
Journal_Title :
Photonics Technology Letters, IEEE
