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Updated: Sep 5, 2025
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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
Published on: August 5, 2013
17.1K
Low-loss microwave photonics links using hollow core fibres
Xi Zhang1, Zitong Feng2, David Marpaung3
1Optoelectronics Research Centre, University of Southampton, Southampton, SO17 1BJ, UK.
Light, Science & Applications
|July 7, 2022
Summary
Hollow-core optical fibres significantly enhance analogue signal transmission by overcoming limitations of standard single-mode fibres. This novel approach improves link gain and reduces noise figure for better performance in communications and sensing applications.
Area of Science:
- Photonics and Optical Communications
- Materials Science
Background:
- Analogue signal transmission offers advantages in cost and performance for specific applications.
- Standard single-mode fibres (SSMF) introduce impairments like stimulated Brillouin scattering, chromatic dispersion, and Kerr nonlinearity, limiting analogue link performance.
- These impairments degrade key metrics such as loss, noise figure, and dynamic range, especially in longer fibre links.
Purpose of the Study:
- To address the performance limitations of analogue photonic links caused by SSMF impairments.
- To investigate the potential of hollow-core optical fibres (HCOF) as a superior alternative to SSMF for analogue signal transmission.
Main Methods:
- Replaced standard single-mode fibres with hollow-core optical fibres in a 7.7 km long analogue photonic link.
- Characterized the performance of the HCOF link, comparing key metrics against traditional SSMF links.
Main Results:
- Hollow-core fibres exhibit six times lower chromatic dispersion and significantly reduced nonlinearity (Brillouin, Kerr) compared to SSMF.
- The HCOF link demonstrated a 15 dB higher link gain and a 6 dB lower noise figure than the SSMF link.
- HCOF surpassed SSMF performance in virtually all measured metrics, indicating substantial improvements in analogue signal transmission quality.
Conclusions:
- Hollow-core optical fibres effectively mitigate the impairments associated with standard single-mode fibres in analogue photonic links.
- The adoption of HCOF offers a pathway to significantly enhanced performance for analogue signal transmission in communications, sensing, and scientific applications.
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