Control of directional evanescent coupling in fs laser written waveguides
Open accessAbstract
We investigate the evanescent coupling of femtosecond laser written waveguides with elliptical and circular shape. A directional tuning the coupling properties is realized in a cubic array by tilting the elliptical waveguides. This allows to specifically pronounce diagonal coupling. In contrast, directional insensitive coupling is demonstrated in a circular waveguide array based on circular waveguides.
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Femtosecond laser technology can produce high-quality waveguides able to support polarization-entangled photon states.
“In a previous work we have demonstrated that fem- tosecond laser technology can produce high-quality waveguides able to support polarization entangled pho- ton states [25, 26].”
From Two-Particle Bosonic-Fermionic Quantum Walk via Integrated Photonics (2012) · cites this paper as [25]
In femtosecond laser written waveguides, birefringence is low and does not significantly affect the coherence of the photons.
“In these femtosecond laser written waveguides, birefringence is low and does not affect sig- nificantly the coherence of the photons.”
From Two-Particle Bosonic-Fermionic Quantum Walk via Integrated Photonics (2012) · cites this paper as [25]
To meet the undepleted pump approximation, the intensities in the pump waveguide do not decrease significantly by choosing a sufficiently weak coupling of Cc = 0.125 cm−1, corresponding to a distance between the pump waveguide and the array of 25 μm.
“To meet the undepleted pump approximation of SPDC we made sure that the intensities in the pump waveguide do not decrease significantly by choosing a sufficiently weak coupling of Cc = 0.125 cm−1, corresponding to a distance between the pump waveguide and the array of 25 µm20.”
From Biphoton generation in quadratic waveguide arrays: A classical optical simulation (2012) · cites this paper as [20]
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References 14 · Cited by 204
- Authors
- Szameit, A., Dreisow, F., Pertsch, T., Nolte, S., & Tünnermann, A.
- Venue
- Optics Express
- Publisher
- Optica Publishing Group
- Published
- 2007-02-19
- Volume
- 15
- Issue
- 4
- Pages
- 1579
- ISSN
- 1094-4087 (ISSN-L)
- OpenAlex
- W4253441427
- Cited by
- 204
- References
- 14
- Citations by year
- 2026: 2 · 2025: 10 · 2024: 7 · 2023: 5 · 2022: 9 · 2021: 12 · 2020: 11 · 2019: 14 · 2018: 11 · 2017: 16 · 2016: 12 · 2015: 11 · 2014: 16 · 2013: 15 · 2012: 11
- FWCI
- 10.75
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Optics Express (publishedVersion)
- PubMed (publishedVersion)
- Publikationsdatenbank der Fraunhofer-Gesellschaft (Fraunhofer-Gesellschaft) (submittedVersion, other-oa)
- Fraunhofer-Publica (Fraunhofer-Gesellschaft) (submittedVersion)
- Topics
- Physical Sciences › Engineering › Computational Mechanics › Laser Material Processing Techniques
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Photonic and Optical Devices
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photorefractive and Nonlinear Optics
- Keywords
- evanescent coupling, femtosecond laser direct writing, waveguide arrays, elliptical waveguide, circular waveguide, directional coupling, diagonal coupling
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