The authors present a new concept of modulation for a 1.55 µm DFB MQW laser diode allowing generation of millimetre waves. The method consists in modulating the saturable absorber of a two-section laser. The improvements brought by the new concept are evaluated theoretically and have been verified experimentally for the first time. In particular, a 30 GHz cutoff frequency has been measured.
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Goutain et al. (1996) studied this question.
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