Results of far-field red laser beam profile measurements after propagation over spun silica 7-hollow-GeO2-doped-ring core microstructured optical fibers
This work presents the results of red laser beam profile measurements performed for earlier on designed and successfully fabricated silica spun few-mode microstructured optical fiber (MOF) with included seven GeO2-doped capillaries (or seven GeO<sub>2</sub>-doped hollow ring cores), placed in the central part of optical fiber cross-section (7-GeO<sub>2</sub>-doped HRC MOF). We compared two drawn from the same cane 7-GeO<sub>2</sub>-doped HRC MOF samples with weak, medium and strong induced twisting – 130, 300 and 730 revolutions per meter. Researched 7-GeO<sub>2</sub>-doped HRC MOF has conventional “telecommunication” outer diameter 125 μm; each GeO<sub>2</sub>-doped HRC inner diameter is 5.0 µm with refractive index difference Δn=0.030 and pitch Λ<sub>1</sub>=8.80 μm; air holes are placed over typical MOF hexagonal geometry, their diameter 8.80 μm and pitch Λ<sub>2</sub>=9.80 μm. We present comparison results of red laser (λ=650 nm) beam profile measurements, performed under radially overfilled launching conditions via singlemode optical fiber (SMF) of ITU-T Rec. G.652 with free space connection to the tested weakly and strongly twisted MOF samples.
Authors
- Т. В. Никулина (ORCID: https://orcid.org/0000-0003-4520-5731)
- Ghanshyam Singh (ORCID: https://orcid.org/0000-0002-0833-6815)
- Alexander S. Evtushenko (ORCID: https://orcid.org/0000-0001-5677-7802)
- Anton V. Bourdine (ORCID: https://orcid.org/0000-0001-8737-5486)
- Manish Tiwari
- Stanislav S. Pashin (ORCID: https://orcid.org/0000-0002-7898-974X)
- Dmitry Shurupov (ORCID: https://orcid.org/0000-0001-5223-2354)
- Konstantin V. Dukelskii (ORCID: https://orcid.org/0000-0002-1627-7499)
- O. V. Kolesnikov (ORCID: https://orcid.org/0000-0002-8728-3458)
- Egishe V. Ter-Nersesyants
- Ankur Saharia (ORCID: https://orcid.org/0000-0003-3107-0645)
- Michael V. Dashkov (ORCID: https://orcid.org/0000-0002-3919-4151)
- Elena S. Zaitseva
- Vladimir V. Demidov (ORCID: https://orcid.org/0000-0003-2545-2487)
- Mukhammadzoir S. Khadjaev
- Grigorii S. Polishchuk
- Andrei S. Borodinov
- Kirill V. Osadchii
- Daniil A. Sutorin
- Alexander Y. Igumenov
- Anastasia A. Demenkova
Institutions
- Skolkovo Institute of Science and Technology (RU)
- Moscow Institute of Physics and Technology (RU)
- Tashkent University of Information Technology (UZ)
- Saint-Petersburg State University of Telecommunications (RU)
- Moscow Technical University of Communication and Informatics (RU)
- Povolzhskiy State University of Telecommunications and Informatics (RU)
- Joint Institute for High Temperatures (RU)
- Scientific Research Institute of Flax Mechanization (RU)
- Skolkovo Foundation (RU)
- State Optical Institute named after SI Vavilov (RU)
Publication Details
- Published
- 2025-08-14
- DOI
- https://doi.org/10.1117/12.3084987
- Primary Topic
- Advanced Fiber Optic Sensors
- Type
- article
- Field-Weighted Citation Impact
- 0.00