Patent ID: 8737442
Filing Date: 2014-05-27
Classification: H01S,H04B

Abstract:
1. A driver for providing a push current to a semiconductor laser diode (LD) and extracting a pull current from the LD, the driver being driven by a differential signal including a positive phase signal and a negative phase signal, comprising: a positive buffer configured to generate a first positive phase signal and a first negative phase signal from the positive phase signal; a negative buffer configured to generate a second positive phase signal and a second negative phase signal from the negative phase signal; a high side driver for generating the push current supplied to the LD, the high side driver being driven by a first superposed signal including the first positive phase signal superposed with the first negative phase signal with a delay with respect to the first positive phase signal; and a low side driver for generating the pull current extracted from the LD, the low side driver being driven by a second superposed signal including the second negative phase signal superposed with the second positive phase signal with a delay with respect to the second negative phase signal.