Patent ID: 9419722
Filing Date: 2016-08-16
CPC Classification: H04B

Claim Text:
1. An apparatus comprising: an optical modulator configured to generate a modulated optical signal based on an electrical digital signal, wherein the optical modulator comprises: a digital signal processor configured to apply electronic pre-distortion to generate the electrical digital signal in a manner that reduces an amount of signal distortion in the modulated optical signal caused by hardware of the optical modulator; and a first all-electronic feedback path between the optical modulator and the digital signal processor, wherein the first all-electronic feedback path comprises a transmission line electrically connected to the second end of the first electrode to transmit a first feedback signal to an analog-to-digital converter connected between the transmission line and the digital signal processor; and wherein the digital signal processor is configured to apply the electronic pre-distortion based on a digital form of the first feedback signal generated by the analog-to-digital converter.