| 摘要 |
A hybridised laser transmitter comprises a laser diode 31 for supplying an optical output signal, and a monitor photodiode 34 receiving an optical signal from a back face of the laser diode 31 for monitoring the output power of the laser diode 31. A laser diode driver 36 is arranged closely adjacent the laser diode 31 between the laser diode 31 and the photodiode 34 and is electrically connected to the laser diode 31, and the driver 36 is transparent to the optical signal passing from the back face of the laser diode 31 towards the photodiode 34. Such an arrangement enables the electrical connection between the driver 36 and the laser diode 31 to be minimised, thus reducing the parasitic inductance and capacitance and improving the high frequency optical performance. As well as improving the optical performance, such an arrangement can enable the transmitter to be operated from a lower voltage supply, such as a 3.3 V d.c. supply. |
