US 2025/0088284 A1 · Optical Linearization Technique

Abstract

An integrated circuit is described. This integrated circuit may include an optical transmit circuit that outputs optical signals (such as optical pulses or FMCW optical signals) having a carrier-frequency (or chirp) pattern as a function of time, where a modulation signal, associated with an optical source and corresponding to the carrier-frequency pattern, includes a predistortion to reduce a nonlinearity associated with the optical transmit circuit. Moreover, the integrated circuit may include a feedback circuit that measures the nonlinearity (e.g., using an interferometer) and that dynamically adjusts the predistortion based at least in part on the measured nonlinearity. Note that the integrated circuit may provide closed-loop adjustment of the predistortion. In some embodiments, the correction of the nonlinearity may be performed in the frequency domain.

Claims20

Dependent claims

An integrated circuit, comprising:

an optical transmit circuit configured to output optical signals having a carrier-frequency pattern as a function of time, wherein a modulation signal, associated with an optical source and corresponding to the carrier-frequency pattern, comprises a predistortion to reduce a nonlinearity associated with the optical transmit circuit;
and
a feedback circuit configured to measure the nonlinearity and that dynamically adjust the predistortion based at least in part on the measured nonlinearity.

Dependencies are inferred from the claim text.

Optical Linearization Technique

Life of this patent

Optical Linearization Technique

Life of this patent

Abstract

Claims20