* . *
  • About
  • Advertise
  • Privacy & Policy
  • Contact
Friday, September 19, 2025
Earth-News
  • Home
  • Business
  • Entertainment
    Congress Bill Spotlight: Make Entertainment Great Again (MEGA) Act, Renaming Kennedy Center to Trump Center – The Fulcrum

    Congress Proposes MEGA Act to Rename Kennedy Center as Trump Center and Revitalize Entertainment

    Massive Attack Say They’ll Remove Music From Spotify – yahoo.com

    Massive Attack Announces Plans to Pull Their Music from Spotify

    REO to return for UI homecoming – The News-Gazette

    REO Gears Up to Ignite the Stage at UI Homecoming Celebration!

    Gen V Season 2: What is The Odessa Project? – yahoo.com

    Gen V Season 2: Unlocking the Secrets of The Odessa Project

    PENN Entertainment stock rating reiterated at Market Outperform by JMP – Investing.com

    PENN Entertainment Stock Rated a Market Outperformer by Experts

    Here’s how NJ’s once-vibrant nightclub scene was born and why it died – Bergen Record

    The Rise and Fall of New Jersey’s Once-Vibrant Nightclub Scene: What Happened?

  • 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
    Huawei Unveils New AI Chip Tech to Challenge Nvidia’s Lead – Bloomberg.com

    Huawei Unveils New AI Chip Tech to Challenge Nvidia’s Lead – Bloomberg.com

    China says US TikTok deal a ‘win-win’, will review app’s technology and IP transfers – Reuters

    China Hails US TikTok Deal as a ‘Win-Win’ While Launching Review of App’s Technology and IP Transfers

    Bucking the Odds: Why Technology Companies Should Embrace Software Patents Today – Crowell & Moring LLP

    Bucking the Odds: Why Technology Companies Should Embrace Software Patents Today – Crowell & Moring LLP

    City IT presented Best of North Carolina Technology Award – RaleighNC.gov

    City IT Honored with Best of North Carolina Technology Award

    LELO Releases 2025 Futurist Report: Intergenerational Views on Relationships, Sex, and Technology – PR Newswire

    Exploring the Future: How Different Generations View Relationships, Sex, and Technology in 2025

    Will New Big Technology Engagements Reshape Innodata’s Growth Path? – Yahoo Finance

    Could New Major Tech Partnerships Propel Innodata to Unprecedented Growth?

    Trending Tags

    • Nintendo Switch
    • CES 2017
    • Playstation 4 Pro
    • Mark Zuckerberg
No Result
View All Result
  • Home
  • Business
  • Entertainment
    Congress Bill Spotlight: Make Entertainment Great Again (MEGA) Act, Renaming Kennedy Center to Trump Center – The Fulcrum

    Congress Proposes MEGA Act to Rename Kennedy Center as Trump Center and Revitalize Entertainment

    Massive Attack Say They’ll Remove Music From Spotify – yahoo.com

    Massive Attack Announces Plans to Pull Their Music from Spotify

    REO to return for UI homecoming – The News-Gazette

    REO Gears Up to Ignite the Stage at UI Homecoming Celebration!

    Gen V Season 2: What is The Odessa Project? – yahoo.com

    Gen V Season 2: Unlocking the Secrets of The Odessa Project

    PENN Entertainment stock rating reiterated at Market Outperform by JMP – Investing.com

    PENN Entertainment Stock Rated a Market Outperformer by Experts

    Here’s how NJ’s once-vibrant nightclub scene was born and why it died – Bergen Record

    The Rise and Fall of New Jersey’s Once-Vibrant Nightclub Scene: What Happened?

  • 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
    Huawei Unveils New AI Chip Tech to Challenge Nvidia’s Lead – Bloomberg.com

    Huawei Unveils New AI Chip Tech to Challenge Nvidia’s Lead – Bloomberg.com

    China says US TikTok deal a ‘win-win’, will review app’s technology and IP transfers – Reuters

    China Hails US TikTok Deal as a ‘Win-Win’ While Launching Review of App’s Technology and IP Transfers

    Bucking the Odds: Why Technology Companies Should Embrace Software Patents Today – Crowell & Moring LLP

    Bucking the Odds: Why Technology Companies Should Embrace Software Patents Today – Crowell & Moring LLP

    City IT presented Best of North Carolina Technology Award – RaleighNC.gov

    City IT Honored with Best of North Carolina Technology Award

    LELO Releases 2025 Futurist Report: Intergenerational Views on Relationships, Sex, and Technology – PR Newswire

    Exploring the Future: How Different Generations View Relationships, Sex, and Technology in 2025

    Will New Big Technology Engagements Reshape Innodata’s Growth Path? – Yahoo Finance

    Could New Major Tech Partnerships Propel Innodata to Unprecedented Growth?

    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

Scientists say they’ve found the world’s oldest mummies, and they’re far from Egypt – NBC News

Scientists say they’ve found the world’s oldest mummies, and they’re far from Egypt – NBC News

September 19, 2025
The growing chasm between MAGA and non-MAGA Republicans on Trump’s economy – Axios

The growing chasm between MAGA and non-MAGA Republicans on Trump’s economy – Axios

September 19, 2025
Congress Bill Spotlight: Make Entertainment Great Again (MEGA) Act, Renaming Kennedy Center to Trump Center – The Fulcrum

Congress Proposes MEGA Act to Rename Kennedy Center as Trump Center and Revitalize Entertainment

September 19, 2025
CHOP researchers unveil framework for boosting children’s oral health – News-Medical

Revolutionary New Framework Set to Transform Children’s Oral Health

September 19, 2025
‘We will not allow politics or outside forces to rewrite the story of Wisconsin’s public schools’: Underly delivers her fifth State of Education Address – Spectrum News

Underly Pledges to Shield Wisconsin’s Public Schools from Political Interference in Impactful Education Speech

September 19, 2025
Simons Collaborations in Ecology and Evolution – Simons Foundation

Innovative Breakthroughs in Ecology and Evolution Through Collaborative Research

September 19, 2025
Michigan Science Center’s vertical wind tunnel demonstration – CBS News

Experience the Thrill of Michigan Science Center’s Vertical Wind Tunnel Demonstration!

September 19, 2025
Roane State and TCAT Knoxville celebrate ‘Countdown to Grand Opening’ for Knox Regional Health Science Education Center – WVLT

Roane State and TCAT Knoxville Kick Off Exciting Countdown to Grand Opening of Knox Regional Health Science Education Center

September 19, 2025
Huawei Unveils New AI Chip Tech to Challenge Nvidia’s Lead – Bloomberg.com

Huawei Unveils New AI Chip Tech to Challenge Nvidia’s Lead – Bloomberg.com

September 19, 2025
Klutch Sports Group Signs Maria Taylor – Variety

Klutch Sports Group Scores Big with Star Broadcaster Maria Taylor Joining the Team

September 18, 2025

Categories

Archives

September 2025
MTWTFSS
1234567
891011121314
15161718192021
22232425262728
2930 
« Aug    
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 (826)
  • Economy (846)
  • Entertainment (21,725)
  • General (17,118)
  • Health (9,891)
  • Lifestyle (859)
  • News (22,149)
  • People (850)
  • Politics (856)
  • Science (16,056)
  • Sports (21,345)
  • Technology (15,828)
  • World (830)

Recent News

Scientists say they’ve found the world’s oldest mummies, and they’re far from Egypt – NBC News

Scientists say they’ve found the world’s oldest mummies, and they’re far from Egypt – NBC News

September 19, 2025
The growing chasm between MAGA and non-MAGA Republicans on Trump’s economy – Axios

The growing chasm between MAGA and non-MAGA Republicans on Trump’s economy – Axios

September 19, 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