Optical fibre pseudo-slits for astronomy

Davenport, John; Diab, Momen; Tripathi, Aashana; Madhav, Kalaga; Roth, Martin

doi:10.1117/12.2562652

Cited by 2 publications

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“…Furthermore, photonic lanterns can be produced by tapering stacks of optical fibers. Many single-mode fibers fuse together to form the multi-mode waveguide [11]. MSPLs can be produced by this method, either by using optical fibers of varying sizes [23], with similar cladding diameters but different cores [4], or using a multicore fiber [10].…”

Section: Conclusion and Future Outlookmentioning

confidence: 99%

“…In this work, we present simulation results that demonstrate the potential of MSPLs as a method of reducing the number of single-mode channels for the various astronomical applications that photonic lanterns have been suggested for so far, e.g. OH suppression [5], reformatting [11], multiplexed spectrographs [12], and beam combiners [13,14]. First, the working principle and the design of the MSPL we considered are given.…”

Section: Introductionmentioning

confidence: 99%

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Simulations of mode-selective photonic lanterns for efficient coupling of starlight into the single-mode regime

et al. 2021

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In ground-based astronomy, starlight distorted by the atmosphere couples poorly into single-mode waveguides but a correction by adaptive optics, even if only partial, can boost coupling into the few-mode regime allowing the use of photonic lanterns to convert into multiple single-mode beams. Corrected wavefronts result in focal patterns that couple mostly with the circularly symmetric waveguide modes. A mode-selective photonic lantern is hence proposed to convert the multimode light into a subset of the single-mode waveguides of the standard photonic lantern, thereby reducing the required number of outputs. We ran simulations to show that only two out of the six waveguides of a 1 × 6 photonic lantern carry > 95% of the coupled light to the outputs at D/r 0 < 10 if the wavefront is partially corrected and the photonic lantern is made mode-selective.

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Section: Conclusion and Future Outlookmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Simulations of mode-selective photonic lanterns for efficient coupling of starlight into the single-mode regime

et al. 2021

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Starlight coupling through atmospheric turbulence into few-mode fibres and photonic lanterns in the presence of partial adaptive optics correction

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et al. 2020

Monthly Notices of the Royal Astronomical Society

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Starlight corrupted by atmospheric turbulence cannot couple efficiently into astronomical instruments based on integrated optics as they require light of high spatial coherence to couple into their single-mode waveguides. Low-order adaptive optics in combination with photonic lanterns offer a practical approach to achieve efficient coupling into multiplexed astrophotonic devices. We investigate, aided by simulations and an experimental testbed, the trade-off between the degrees of freedom of the adaptive optics system and those of the input waveguide of an integrated optic component leading to a cost-effective hybrid system that achieves a signal-to-noise ratio higher than a standalone device fed by a single-mode fibre.

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Optical fibre pseudo-slits for astronomy

Cited by 2 publications

References 0 publications

Simulations of mode-selective photonic lanterns for efficient coupling of starlight into the single-mode regime

Simulations of mode-selective photonic lanterns for efficient coupling of starlight into the single-mode regime

Starlight coupling through atmospheric turbulence into few-mode fibres and photonic lanterns in the presence of partial adaptive optics correction

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