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Related Experiment Video

Updated: Dec 18, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Integrated dual optical frequency comb source.

Justin K Alexander, Ludovic Caro, Mohamad Dernaika

|June 19, 2020

Summary

This summary is machine-generated.

This study demonstrates the first monolithically integrated dual-channel optical frequency comb source on a single photonic integrated circuit (PIC). This novel dual comb generator utilizes three lasers for generating two distinct optical frequency combs.

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Area of Science:

Photonics
Integrated Optics
Laser Physics

Background:

Optical frequency combs are crucial for precise measurements and communications.
Previous dual comb sources often required complex external setups.
Monolithic integration offers advantages in size, stability, and cost.

Purpose of the Study:

To demonstrate a novel, fully integrated dual-channel optical frequency comb source.
To achieve monolithic integration of all necessary laser components on a single chip.
To generate two distinct optical frequency combs using a master-slave-slave laser configuration.

Main Methods:

Utilized a regrowth-free fabrication process for laser integration.
Employed a master-slave-slave laser configuration.
Used a 1x2 multimode interference coupler to split master laser power.
Injection-locked slave lasers and gain-switching to generate combs.

Main Results:

Successfully demonstrated a monolithically integrated dual-channel optical frequency comb source.
Generated two distinct optical frequency combs at repetition rates of 4.1 GHz and 5 GHz.
Achieved integration of three lasers on a single photonic integrated circuit (PIC).

Conclusions:

This work presents the first demonstration of a dual optical frequency comb source with all light sources monolithically integrated.
The developed PIC-based source offers a compact and potentially cost-effective solution for dual comb generation.
This technology paves the way for advanced applications in spectroscopy, metrology, and communications.