High-speed optical signal processing using semiconductor optical amplifiers
โ Scribed by Colja Schubert; Reinhold Ludwig; Hans-Georg Weber
- Publisher
- Springer-Verlag
- Year
- 2005
- Tongue
- English
- Weight
- 633 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1619-8638
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๐ SIMILAR VOLUMES
## Abstract A novel allโoptical logic OR gate based on crossโgain modulation (XGM) using a twoโcascaded semiconductor optical amplifiers (SOAs) in a counterpropagating topology is presented. The attractive issue of the proposed method is that the logic OR gate can be obtained at a probe wavelength
In the regime with maximum linear gain in a quantum dot (QD) semiconductor optical amplifier (SOA), instantaneous gain modulation by change of the photon density is possible due to spectral hole burning effects. This, in turn, leads to the opportunity of ultrafast cross-gain modulation (XGM) without