The hidden limit in light: intrinsic noise reshaping Brillouin metrology

Leonardo Rossi; Gabriele Bolognini

doi:10.1038/s41377-026-02248-y

Your Location：

Home >

Browse articles >

The hidden limit in light: intrinsic noise reshaping Brillouin metrology

News & Views

- The hidden limit in light: intrinsic noise reshaping Brillouin metrology
- Light: Science & Applications Vol. 15, Issue 5, Pages: 1408-1410(2026)
- Affiliations：
  
  Consiglio Nazionale delle Ricerche, Bologna 40129, Italy
- Author bio：
  
  Gabriele Bolognini (gabriele.bolognini@cnr.it)
- Funds：
- DOI：10.1038/s41377-026-02248-y
  CLC：
- Online First：03 March 2026，
  
  Published：31 May 2026
- Accepted：
Scan QR Code
Rossi, L. & Bolognini, G. The hidden limit in light: intrinsic noise reshaping Brillouin metrology. Light: Science & Applications, 15, 1408-1410 (2026).
DOI：

Rossi, L. & Bolognini, G. The hidden limit in light: intrinsic noise reshaping Brillouin metrology. Light: Science & Applications, 15, 1408-1410 (2026). DOI： 10.1038/s41377-026-02248-y.

摘要

Abstract

Spontaneous Brillouin scattering is widely used to probe the mechanical and thermal state of matter

yet it has been assumed to be intrinsically stable. Jin and colleagues overturn this view by showing that spontaneous Brillouin light carries its own thermally driven noise floor. Their framework predicts—and experiments confirm—a universal upper bound of SNR = 1 under ideal detection conditions which can become even more restrictive than the conventional shot-noise limit in practical Brillouin systems. This discovery introduces a new fundamental limit to Brillouin-based sensing

microscopy and metrology.

关键词

Keywords

references

Boyd, R. W. Nonlinear Optics. 3rd edn (Orlando: Academic Press, 2008).

Meng, Z. K. et al. Seeing cells in a new light: a renaissance of Brillouin spectroscopy. Adv. Opt. Photonics 8 , 300–327 (2016)..

Brillouin, L. Diffusion de la lumière et des rayons X par un corps transparent homogène - Influence de l’agitation thermique. Annales de. Phys. 9 , 88–122 (1922)..

Kurashima, T. et al. Brillouin optical-fiber time domain reflectometry. IEICE Trans. Commun. E76-B , 382–390 (1993)..

Shimizu, K. et al. Coherent self-heterodyne detection of spontaneously Brillouin-scattered light waves in a single-mode fiber. Opt. Lett. 18 , 185–187 (1993)..

Mizuno, Y. et al. Proposal of Brillouin optical correlation-domain reflectometry (BOCDR). Opt. Express 16 , 12148–12153 (2008)..

Motil, A., Bergman, A. & Tur, M. [INVITED ] State of the art of Brillouin fiber-optic distributed sensing. Opt. Laser Technol. 78 , 81–103 (2016)..

Mizuno, Y. et al. Ultrahigh-speed distributed Brillouin reflectometry. Light Sci. Appl. 5 , e16184 (2016)..

Yang, F., Gyger, F. & Thévenaz, L. Intense Brillouin amplification in gas using hollow-core waveguides. Nat. Photonics 14 , 700–708 (2020)..

Ballmann, C. W. et al. Stimulated brillouin scattering microscopic imaging. Sci. Rep. 5 , 18139 (2016)..

Kabakova, I. et al. Brillouin microscopy. Nat. Rev. Methods Prim. 4 , 8 (2024)..

Scarcelli, G. & Yun, S. H. Confocal Brillouin microscopy for three-dimensional mechanical imaging. Nat. Photonics 2 , 39–43 (2008)..

Eggleton, B. J. et al. Brillouin integrated photonics. Nat. Photonics 13 , 664–677 (2019)..

Chauhan, N. et al. Visible light photonic integrated Brillouin laser. Nat. Commun. 12 , 4685 (2021)..

Wang, S. et al. Study on the signal-to-noise ratio of Brillouin optical-time domain analyzers. Opt. Express 28 , 19864–19876 (2020)..

Gao, X. et al. Impact of optical noises on unipolar-coded Brillouin optical time-domain analyzers. Opt. Express 29 , 22146–22158 (2021)..

Jin, S. M. et al. Analytical signal-to-noise ratio model on frequency-scanned Brillouin optical time-domain reflectometry. J. Lightwave Technol. 42 , 5786–5796 (2024)..

Boyd, R. W., Rza̧ewski, K. & Narum, P. Noise initiation of stimulated Brillouin scattering. Phys. Rev. A 42 , 5514–5521 (1990)..

Zel’dovich, B. Y., Pilipetsky, N. F. & Shkunov, V. V. Principles of Phase Conjugation (Heidelberg: Springer, 1985).

Gaeta, A. L. & Boyd, R. W. Stochastic dynamics of stimulated Brillouin scattering in an optical fiber. Phys. Rev. A 44 , 3205–3209 (1991)..

Jin, S. M. et al. A framework for spontaneous Brillouin noise: unveiling fundamental limits in Brillouin metrology. Light Sci. Appl. 15 , 44 (2026)..

Views

Downloads

CSCD

Alert me when the article has been cited

Submit

Tools

Publicity Resources

Three-dimensional nanophotonics with spatially modulated optical properties

Multifunctional ligand engineering enables high-performance CsPb(Br/Cl)3 nanocrystals toward efficient and stable pure-blue perovskite LEDs

Illuminating innovations: a conversation with René-Jean Essiambre on the frontiers of optical communication

Ion-pair pinning on perovskite quantum dots for high-efficiency air-processed light-emitting diodes with Rec. 2020 compliance

Large zoom ratio and adaptive aberration correction microscope using 4DPSF-aware Physical Degradation-guided Network

Related Author

No data

Related Institution

No data

⁰