Few-mode fibre-optic microwave photonic links

Light, Science & Applications
He WenGuifang Li

Abstract

The fibre-optic microwave photonic link has become one of the basic building blocks for microwave photonics. Increasing the optical power at the receiver is the best way to improve all link performance metrics including gain, noise figure and dynamic range. Even though lasers can produce and photodetectors can receive optical powers on the order of a Watt or more, the power-handling capability of optical fibres is orders-of-magnitude lower. In this paper, we propose and demonstrate the use of few-mode fibres to bridge this power-handling gap, exploiting their unique features of small acousto-optic effective area, large effective areas of optical modes, as well as orthogonality and walk-off among spatial modes. Using specially designed few-mode fibres, we demonstrate order-of-magnitude improvements in link performances for single-channel and multiplexed transmission. This work represents the first step in few-mode microwave photonics. The spatial degrees of freedom can also offer other functionalities such as large, tunable delays based on modal dispersion and wavelength-independent lossless signal combining, which are indispensable in microwave photonics.

References

Apr 15, 1985·Physical Review. B, Condensed Matter·R M ShelbyP W Bayer
Dec 14, 2005·Optics Letters·A Boh RuffinFrank Annunziata
May 27, 2006·Optics Letters·S RamachandranF V Dimarcello
Jul 11, 2005·Optics Express·Andrey KobyakovRaj Mishra
Aug 1, 1987·Optics Letters·M N IslamH T Shang
Feb 12, 2014·Optics Express·Sergio G Leon-SavalJoss Bland-Hawthorn
Jul 1, 2014·Optics Express·Guillaume LabroilleJean-François Morizur

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Citations

Dec 28, 2019·Optics Express·Dong-Nhat NguyenBeatriz Ortega
Nov 4, 2020·Nature Communications·Egor S ManuylovichSergei K Turitsyn

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