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Detailed theoretical investigation and comparison of the cascadability of conventional and gain-clamped SOA gates in multiwavelength optical networks

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1 Author(s)
Wolfson, D. ; Res. Center COM, Tech. Univ. Denmark, Lyngby, Denmark

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.

Published in:

Photonics Technology Letters, IEEE  (Volume:11 ,  Issue: 11 )

Date of Publication:

Nov. 1999

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