10 GHz generation with ultra-low phase noise via the transfer oscillator technique
Coherent frequency division of high-stability optical sources permits the extraction of microwave signals with ultra-low phase noise, enabling their application to systems with stringent timing precision. To date, the highest performance systems have required tight phase stabilization of laboratory...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2022-02-01
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| Series: | APL Photonics |
| Online Access: | http://dx.doi.org/10.1063/5.0073843 |
| _version_ | 1818998917769986048 |
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| author | N. V. Nardelli T. M. Fortier M. Pomponio E. Baumann C. Nelson T. R. Schibli A. Hati |
| author_facet | N. V. Nardelli T. M. Fortier M. Pomponio E. Baumann C. Nelson T. R. Schibli A. Hati |
| author_sort | N. V. Nardelli |
| collection | DOAJ |
| description | Coherent frequency division of high-stability optical sources permits the extraction of microwave signals with ultra-low phase noise, enabling their application to systems with stringent timing precision. To date, the highest performance systems have required tight phase stabilization of laboratory grade optical frequency combs to Fabry–Pérot optical reference cavities for faithful optical-to-microwave frequency division. This requirement limits the technology to highly controlled laboratory environments. Here, we employ a transfer oscillator technique, which employs digital and RF analog electronics to coherently suppress additive optical frequency comb noise. This relaxes the stabilization requirements and allows for the extraction of multiple independent microwave outputs from a single comb, while at the same time, permitting low-noise microwave generation from combs with higher noise profiles. Using this method, we transferred the phase stability of two high-finesse optical sources at 1157 and 1070 nm to two independent 10 GHz signals using a single frequency comb. We demonstrated absolute phase noise below −106 dBc/Hz at 1 Hz from the carrier with corresponding 1 s fractional frequency instability below 2 × 10−15. Finally, the latter phase noise levels were attainable for comb linewidths broadened up to 2 MHz, demonstrating the potential for out-of-lab use with low SWaP lasers. |
| first_indexed | 2024-12-20T22:09:09Z |
| format | Article |
| id | doaj.art-d459c2b50227403ebf8924b7fe92bf07 |
| institution | Directory Open Access Journal |
| issn | 2378-0967 |
| language | English |
| last_indexed | 2024-12-20T22:09:09Z |
| publishDate | 2022-02-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Photonics |
| spelling | doaj.art-d459c2b50227403ebf8924b7fe92bf072022-12-21T19:25:12ZengAIP Publishing LLCAPL Photonics2378-09672022-02-0172026105026105-1010.1063/5.007384310 GHz generation with ultra-low phase noise via the transfer oscillator techniqueN. V. Nardelli0T. M. Fortier1M. Pomponio2E. Baumann3C. Nelson4T. R. Schibli5A. Hati6National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USANational Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USAUniversity of Colorado, Boulder, Colorado 80309, USANational Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USACoherent frequency division of high-stability optical sources permits the extraction of microwave signals with ultra-low phase noise, enabling their application to systems with stringent timing precision. To date, the highest performance systems have required tight phase stabilization of laboratory grade optical frequency combs to Fabry–Pérot optical reference cavities for faithful optical-to-microwave frequency division. This requirement limits the technology to highly controlled laboratory environments. Here, we employ a transfer oscillator technique, which employs digital and RF analog electronics to coherently suppress additive optical frequency comb noise. This relaxes the stabilization requirements and allows for the extraction of multiple independent microwave outputs from a single comb, while at the same time, permitting low-noise microwave generation from combs with higher noise profiles. Using this method, we transferred the phase stability of two high-finesse optical sources at 1157 and 1070 nm to two independent 10 GHz signals using a single frequency comb. We demonstrated absolute phase noise below −106 dBc/Hz at 1 Hz from the carrier with corresponding 1 s fractional frequency instability below 2 × 10−15. Finally, the latter phase noise levels were attainable for comb linewidths broadened up to 2 MHz, demonstrating the potential for out-of-lab use with low SWaP lasers.http://dx.doi.org/10.1063/5.0073843 |
| spellingShingle | N. V. Nardelli T. M. Fortier M. Pomponio E. Baumann C. Nelson T. R. Schibli A. Hati 10 GHz generation with ultra-low phase noise via the transfer oscillator technique APL Photonics |
| title | 10 GHz generation with ultra-low phase noise via the transfer oscillator technique |
| title_full | 10 GHz generation with ultra-low phase noise via the transfer oscillator technique |
| title_fullStr | 10 GHz generation with ultra-low phase noise via the transfer oscillator technique |
| title_full_unstemmed | 10 GHz generation with ultra-low phase noise via the transfer oscillator technique |
| title_short | 10 GHz generation with ultra-low phase noise via the transfer oscillator technique |
| title_sort | 10 ghz generation with ultra low phase noise via the transfer oscillator technique |
| url | http://dx.doi.org/10.1063/5.0073843 |
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