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Updated: Dec 18, 2025
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
9.5K
Integrated dual optical frequency comb source.
Optics Express
|June 19, 2020
Summary
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.
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.
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