| 摘要 |
The invention relates to an optical emitter with diode emitting radiations. In this circuit a regulating amplifier controls a master transistor T5 which supplies a laser diode CR0, the image of the current of which is carried to the input of the amplifier by a photodetector CR1 allowing negative feedback. The regulating amplifier consists, according to the invention, of a differential amplifier T3, T4, RO, R3, R4 enabling the master transistor T5 to be controlled via the output S to the high frequencies, via a high-pass filter C2, R7 and via the symmetric output SS to the low frequencies by an additional amplification stage (T6, D1, ..., DN, R5, R6, C1). The invention applies to the transmission of data on optical fibres for local telecommunications networks. <IMAGE> |
