Switches and frequency converters based on cross-gain modulation in semiconductor optical amplifiers |
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Authors: | D Marcenac A Mecozzi |
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Affiliation: | British Telecom Res. Labs., Ipswich, UK; |
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Abstract: | The large-signal theory of frequency converters based on cross-gain and cross-phase modulations in a semiconductor optical amplifier is developed, for the case in which pump and probe are injected from the same facet (co-propagating case). Simple expressions for the bandwidth of cross-gain modulation are derived for single and cascaded SOA's, and large-signal simulations are carried out for cascaded SOA's, pointing out some important system issues. In the cascaded case, the effect of the loss between the SOA's is highlighted. |
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