Story perspectives

Harvard Engineers Break Ground with New Optical Comb Technology

2/20/2026

Summary

Story summary

Researchers at Harvard's John A. Paulson School of Engineering developed a method for optical frequency combs on thin-film lithium niobate.
The approach suppresses Raman scattering to enable broader combs.
The normal-dispersion Kerr microcomb is the first on this platform.
The work could simplify systems by integrating comb generation and modulation on a single chip, funded by the U.S. Air Force, the National Science Foundation, and the Department of Defense.

History

Historical Context

In 2005, researchers at the National Institute of Standards and Technology developed the first optical frequency comb, enhancing precision measurement in fields like telecommunications. This innovation, supported by the U.S. Department of Commerce, laid the groundwork for recent advancements in thin-film lithium niobate technology, which aims to integrate comb generation on a single chip, potentially transforming optical technologies in defense and communications.

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Story summary

Researchers at Harvard's John A. Paulson School of Engineering developed a method for optical frequency combs on thin-film lithium niobate.
The approach suppresses Raman scattering to enable broader combs.
The normal-dispersion Kerr microcomb is the first on this platform.
The work could simplify systems by integrating comb generation and modulation on a single chip, funded by the U.S. Air Force, the National Science Foundation, and the Department of Defense.

1 / 2