* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Thursday, October 9, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Israel’s Entertainment Industry Is Being Targeted by the Left in Hollywood and the Right at Home – The Wall Street Journal

    Inside the Battle Over Israel’s Entertainment Industry: Clashing Forces from Hollywood and Home

    Offset Is Ready To Finalize Divorce With Cardi B for a Major Reason – Yahoo

    Offset Poised to Finalize Divorce from Cardi B for a Major Reason

    Beyond the Stage: 8 Performing Arts Centers Driving Entertainment and Education – Livability.com

    Beyond the Stage: 8 Performing Arts Centers Transforming Entertainment and Education

    Row K Entertainment Emerges as Major New Hollywood Buyer With Splashy TIFF Shopping Spree – TheWrap

    Row K Entertainment Emerges as Major New Hollywood Buyer With Splashy TIFF Shopping Spree – TheWrap

    Charlie Hunnam Reflects on Playing a Serial Killer in Monster: The Ed Gein Story – Yahoo

    Charlie Hunnam Reveals the Dark Challenges of Playing a Serial Killer in Monster: The Ed Gein Story

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    ENERCON and Biome collaborate for wind turbine noise reduction technology – Yahoo Finance

    ENERCON and Biome Join Forces to Revolutionize Wind Turbine Noise Reduction

    US and investors gambling on unproven nuclear technology, warn experts – Financial Times

    US and investors gambling on unproven nuclear technology, warn experts – Financial Times

    Is Light-Speed Analog Computing the Future of Technology? – BIOENGINEER.ORG

    Could Light-Speed Analog Computing Transform the Future of Technology?

    ARM Institute opens technology project call to speed submarine manufacturing – The Robot Report

    ARM Institute Unveils Cutting-Edge Technology Project to Revolutionize Submarine Manufacturing

    Forget Cowbells. Cows Wear High-Tech Collars Now. – The New York Times

    Ditch the Cowbells: Discover the High-Tech Collars Transforming Cattle Care

    What the Recent Price Surge Means for Figure Technology Solutions After SEC Settlement – Yahoo Finance

    What the Recent Price Surge Reveals About Figure Technology Solutions Following SEC Settlement

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Israel’s Entertainment Industry Is Being Targeted by the Left in Hollywood and the Right at Home – The Wall Street Journal

    Inside the Battle Over Israel’s Entertainment Industry: Clashing Forces from Hollywood and Home

    Offset Is Ready To Finalize Divorce With Cardi B for a Major Reason – Yahoo

    Offset Poised to Finalize Divorce from Cardi B for a Major Reason

    Beyond the Stage: 8 Performing Arts Centers Driving Entertainment and Education – Livability.com

    Beyond the Stage: 8 Performing Arts Centers Transforming Entertainment and Education

    Row K Entertainment Emerges as Major New Hollywood Buyer With Splashy TIFF Shopping Spree – TheWrap

    Row K Entertainment Emerges as Major New Hollywood Buyer With Splashy TIFF Shopping Spree – TheWrap

    Charlie Hunnam Reflects on Playing a Serial Killer in Monster: The Ed Gein Story – Yahoo

    Charlie Hunnam Reveals the Dark Challenges of Playing a Serial Killer in Monster: The Ed Gein Story

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

    “Reba” cast, then and now: See the stars 24 years later (and who’s reunited for another show) – Yahoo

  • General
  • Health
  • News

    Cracking the Code: Why China’s Economic Challenges Aren’t Shaking Markets, Unlike America’s” – Bloomberg

    Trump’s Narrow Window to Spread the Truth About Harris

    Trump’s Narrow Window to Spread the Truth About Harris

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    Israel-Gaza war live updates: Hamas leader Ismail Haniyeh assassinated in Iran, group says

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    PAP Boss to Niger Delta Youths, Stay Away from the Protest

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Court Restricts Protests In Lagos To Freedom, Peace Park

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Fans React to Jazz Jennings’ Inspiring Weight Loss Journey

    Trending Tags

    • Trump Inauguration
    • United Stated
    • White House
    • Market Stories
    • Election Results
  • Science
  • Sports
  • Technology
    ENERCON and Biome collaborate for wind turbine noise reduction technology – Yahoo Finance

    ENERCON and Biome Join Forces to Revolutionize Wind Turbine Noise Reduction

    US and investors gambling on unproven nuclear technology, warn experts – Financial Times

    US and investors gambling on unproven nuclear technology, warn experts – Financial Times

    Is Light-Speed Analog Computing the Future of Technology? – BIOENGINEER.ORG

    Could Light-Speed Analog Computing Transform the Future of Technology?

    ARM Institute opens technology project call to speed submarine manufacturing – The Robot Report

    ARM Institute Unveils Cutting-Edge Technology Project to Revolutionize Submarine Manufacturing

    Forget Cowbells. Cows Wear High-Tech Collars Now. – The New York Times

    Ditch the Cowbells: Discover the High-Tech Collars Transforming Cattle Care

    What the Recent Price Surge Means for Figure Technology Solutions After SEC Settlement – Yahoo Finance

    What the Recent Price Surge Reveals About Figure Technology Solutions Following SEC Settlement

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
Earth-News
No Result
View All Result
Home Science

Photonics Breakthrough: Tiny Chip Generates High-Quality Microwave Signals

March 31, 2024
in Science
Photonics Breakthrough: Tiny Chip Generates High-Quality Microwave Signals
Share on FacebookShare on Twitter

By Meeri Kim, Columbia University School of Engineering and Applied Science March 31, 2024

Photonic Integrated Chip Schematic

A high-level schematic of the photonic integrated chip, developed by the Gaeta lab, for all-optical optical frequency division, or OFD – a method of converting a high-frequency signal to a lower frequency. Credit: Yun Zhao/Columbia Engineering

Researchers create a compact, all-optical device with the lowest microwave noise ever achieved for an integrated chip.

In a new Nature study, Columbia Engineering researchers have built a photonic chip that can produce high-quality, ultra-low-noise microwave signals using only a single laser. The compact device — a chip so small, it could fit on a sharp pencil point — results in the lowest microwave noise ever observed in an integrated photonics platform. The achievement provides a promising pathway towards small-footprint ultra-low-noise microwave generation for applications such as high-speed communication, atomic clocks, and autonomous vehicles.The Challenge of Noise in Microwave Generation

Electronic devices for global navigation, wireless communications, radar, and precision timing need stable microwave sources to serve as clocks and information carriers. A key aspect to increasing the performance of these devices is reducing the noise, or random fluctuations in phase, that is present on the microwave.

“In the past decade, a technique known as optical frequency division has resulted in the lowest noise microwave signals that have been generated to date,” said Alexander Gaeta, David M. Rickey Professor of Applied Physics and Materials Science and professor of electrical engineering at Columbia Engineering. “Typically, such a system requires multiple lasers and a relatively large volume to contain all the components.”

Optical frequency division – a method of converting a high-frequency signal to a lower frequency – is a recent innovation for generating microwaves in which the noise has been strongly suppressed. However, a large table-top-level footprint prevents such systems from being leveraged for miniaturized sensing and communication applications that demand more compact microwave sources and are broadly adopted.

“We have realized a device that is able to perform optical frequency division entirely on a chip in an area as small as 1 mm2 using only a single laser,” said Gaeta. “We demonstrate for the first time the process of optical frequency division without the need for electronics, greatly simplifying the device design.”

Quantum and Nonlinear Photonics: The Core of Innovation

Gaeta’s group specializes in quantum and nonlinear photonics, or how laser light interacts with matter. Focus areas include nonlinear nanophotonics, frequency-comb generation, intense ultrafast pulse interactions, and generation and processing of quantum states of light.

In the current study, his group designed and fabricated an on-chip, all-optical device that generates a 16-GHz microwave signal with the lowest frequency noise that has ever been achieved in an integrated chip platform. The device uses two microresonators made of silicon nitride that are photonically coupled together.

A single-frequency laser pumps both microresonators. One is used to create an optical parametric oscillator, which converts the input wave into two output waves – one higher and one lower in frequency. The frequency spacing of the two new frequencies is adjusted to be in the terahertz regime. As a result of the quantum correlations of the oscillator, the noise of this frequency difference can be thousands of times less than the noise of the input laser wave.

The second microresonator is adjusted to generate an optical frequency comb with a microwave spacing. A small amount of light from the oscillator is then coupled to the comb generator, leading to synchronization of the microwave comb frequency to the terahertz oscillator that automatically results in optical frequency division.

Potential Impact and Future Applications

The work from Gaeta’s group represents a simple, effective approach for performing optical frequency division within a small, robust, and highly portable package. The findings open the door for chip-scale devices that can generate stable, pure microwave signals comparable to those produced in laboratories that perform precision measurements.

“Eventually, this type of all-optical frequency division will lead to new designs of future telecommunication devices,” he said. “It could also improve the precision of microwave radars used for autonomous vehicles.”

Reference: “All-optical frequency division on-chip using a single laser” by Yun Zhao, Jae K. Jang, Garrett J. Beals, Karl J. McNulty, Xingchen Ji, Yoshitomo Okawachi, Michal Lipson and Alexander L. Gaeta, 11 March 2024, Nature.
DOI: 10.1038/s41586-024-07136-2

Gaeta, along with Yun Zhao — who was a graduate student and is now a post-doc in the Gaeta Lab — and research scientist Yoshitomo Okawachi, conceived the project’s core idea. Then, Zhao and post-doc Jae Jang designed the devices and performed the experiment.

The project was done in close collaboration with Eugene Higgins Professor of Electrical Engineering and Professor of Applied Physics Michal Lipson and her group. Karl McNulty from the Lipson group fabricated the photonic chip at both Columbia and Cornell University. TheTerremoto Shared High-Performance Computing Cluster, a service provided by Columbia University Information Technology (CUIT), was used to model the noise properties of optical parametric oscillators.

>>> Read full article>>>
Copyright for syndicated content belongs to the linked Source : SciTechDaily – https://scitechdaily.com/photonics-breakthrough-tiny-chip-generates-high-quality-microwave-signals/

Tags: BreakthroughPhotonicsscience
Previous Post

Building Resilient Teens: The Essential Role of Reflective Parenting

Next Post

Defying Expectations: NASA’s Chandra Uncovers a Quasar’s Surprising Galactic Impact

Israel’s Entertainment Industry Is Being Targeted by the Left in Hollywood and the Right at Home – The Wall Street Journal

Inside the Battle Over Israel’s Entertainment Industry: Clashing Forces from Hollywood and Home

October 9, 2025
Better Food, Better Health: Redefining Chronic Disease Care Through Nutrition – The American Journal of Managed Care® (AJMC®)

Better Food, Better Health: Redefining Chronic Disease Care Through Nutrition – The American Journal of Managed Care® (AJMC®)

October 9, 2025
WATCH: ‘Come and get me,’ Pritzker responds to Trump’s call to put Illinois governor in jail – PBS

WATCH: ‘Come and get me,’ Pritzker responds to Trump’s call to put Illinois governor in jail – PBS

October 9, 2025
New Method to Monitor Wild Reindeer Populations Could Boost Conservation Efforts – Bioengineer.org

New Method to Monitor Wild Reindeer Populations Could Boost Conservation Efforts – Bioengineer.org

October 8, 2025
Scientists just proved the moai could walk, solving a 500-year mystery – ScienceDaily

Scientists Finally Reveal How the Moai Statues Could “Walk,” Solving a 500-Year Mystery

October 8, 2025
GenoPalate Advances Its Science Again With Diet Snapshot – Yahoo Finance

GenoPalate Advances Its Science Again With Diet Snapshot – Yahoo Finance

October 8, 2025
Horses making the rounds at Florida hospitals – The Union Democrat

Horses Bringing Joy and Healing to Florida Hospitals

October 8, 2025
ENERCON and Biome collaborate for wind turbine noise reduction technology – Yahoo Finance

ENERCON and Biome Join Forces to Revolutionize Wind Turbine Noise Reduction

October 8, 2025
Cancun’s Sports Bar & Grill opens second location in North Tallahassee – Tallahassee Democrat

Cancun’s Sports Bar & Grill Expands with Exciting New Location in North Tallahassee

October 8, 2025
Welcome Home: World Aquatics Breaks Ground on Future Headquarters in Budapest – World Aquatics

Welcome Home: World Aquatics Launches Exciting New Headquarters in Budapest

October 8, 2025

Categories

Archives

October 2025
M T W T F S S
 12345
6789101112
13141516171819
20212223242526
2728293031  
« Sep    
Earth-News.info

The Earth News is an independent English-language daily published Website from all around the World News

Browse by Category

  • Business (20,132)
  • Ecology (858)
  • Economy (878)
  • Entertainment (21,752)
  • General (17,488)
  • Health (9,921)
  • Lifestyle (891)
  • News (22,149)
  • People (880)
  • Politics (890)
  • Science (16,089)
  • Sports (21,379)
  • Technology (15,859)
  • World (861)

Recent News

Israel’s Entertainment Industry Is Being Targeted by the Left in Hollywood and the Right at Home – The Wall Street Journal

Inside the Battle Over Israel’s Entertainment Industry: Clashing Forces from Hollywood and Home

October 9, 2025
Better Food, Better Health: Redefining Chronic Disease Care Through Nutrition – The American Journal of Managed Care® (AJMC®)

Better Food, Better Health: Redefining Chronic Disease Care Through Nutrition – The American Journal of Managed Care® (AJMC®)

October 9, 2025
  • About
  • Advertise
  • Privacy & Policy
  • Contact

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

No Result
View All Result

© 2023 earth-news.info

Go to mobile version