Publication

Optical Arbitrary Waveform Generation (OAWG) Using Self-Injection-Locked RF-Synchronized Kerr Soliton Microcombs

Chloé Shirin Koos
2025

Abstract

We demonstrate optical arbitrary waveform generation using self-injection-locked Kerr micro-combs that are synchronized to an electronic clock via a closed-loop control. We show 200 GBd 32QAM transmission and FMCW LiDAR with an unprecedented resolution of 0.75 mm.

Official source

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Chloé Shirin Koos
2025

Abstract

Official source

Related concepts (10)

Closed-loop controller

A closed-loop controller or feedback controller is a control loop which incorporates feedback, in contrast to an open-loop controller or non-feedback controller. A closed-loop controller uses feedback to control states or outputs of a dynamical system. Its name comes from the information path in the system: process inputs (e.g., voltage applied to an electric motor) have an effect on the process outputs (e.g., speed or torque of the motor), which is measured with sensors and processed by the controller; the result (the control signal) is "fed back" as input to the process, closing the loop.

Open-loop controller

In control theory, an open-loop controller, also called a non-feedback controller, is a control loop part of a control system in which the control action is independent of the "process output", which is the process variable that is being controlled. It does not use feedback to determine if its output has achieved the desired goal of the input command or process setpoint. There are many open-loop controls, such as on/off switching of valves, machinery, lights, motors or heaters, where the control result is known to be approximately sufficient under normal conditions without the need for feedback.

Closed-loop transfer function

In control theory, a closed-loop transfer function is a mathematical function describing the net result of the effects of a feedback control loop on the input signal to the plant under control. The closed-loop transfer function is measured at the output. The output signal can be calculated from the closed-loop transfer function and the input signal. Signals may be waveforms, , or other types of data streams.