Design of vortex optical fibers for RoF systems: Part II: pilot samples of chiral microstructured optical fibers

Bourdine, Anton V.; Burdin, Vladimir A.; Demidov, Vladimir V.; Дукельский, К. В.; Gizatulin, Azat R.; Khokhlov, A. V.; Meshkov, Ivan K.; Sultanov, Albert Kh.; Ter-Nersesyants, Egishe V.; Ustinov, Sergei V.; Zaitseva, Elena S.

doi:10.1117/12.2566460

Cited by 5 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For this purpose, first of all, the motor was installed to the feed unit of tower (in the first stage of modification it was stepper, while further in the final configuration it was replaced by commutator motor), that added the rotation option to the drawing system [82][83][84] with rotation speed up to 2000 revolutions per minute. Because MOF / PCF structure contains air holes (that provide features, much differing from properties of typical telecommunication optical fibers), special matching system was developed, fabricated and installed on the drawing tower to feed excess pressure feeding to the MOF cane for control and management of capillary size under cane rotation during MOF drawing process 85,86 . As a result, we successfully fabricated two series of 20…30 m long pilot samples of chiral silica MOFs 77 with 6 GeO2-doped graded-index (Fig.…”

Section: Twisted 6-geo2-doped Core Silica Mofmentioning

confidence: 99%

Experimental researches and testing of silica twisted six-GeO2-doped core microstructured optical fiber. Part I: fusion splicing with telecommunication optical fibers and differential mode delay map measurements

Bourdine,

Dashkov,

Evtushenko

et al. 2023

Optical Technologies for Telecommunications 2022

View full text Add to dashboard Cite

This work presents results of test series, performed for earlier on designed and successfully fabricated silica few-mode microstructured optical fibers (MOF) with six GeO2-doped cores, induced twisting 100 revolutions per meter, typical "telecommunication" outer diameter 125 µm, core diameter 8.7 µm, air hole diameter 4.6 µm, pitch 7.2 µm, and core quasi-step / graded refractive index profiles with height 0.0360 / 0.0275, respectively. Part I introduces attempts for *

show abstract

Section: Twisted 6-geo2-doped Core Silica Mofmentioning

confidence: 99%

Experimental researches and testing of silica twisted six-GeO2-doped core microstructured optical fiber. Part I: fusion splicing with telecommunication optical fibers and differential mode delay map measurements

Bourdine,

Dashkov,

Evtushenko

et al. 2023

Optical Technologies for Telecommunications 2022

View full text Add to dashboard Cite

show abstract

“…Earlier on [29][30][31][32][33] we discussed technological issues of drawing tower modifications to provide fabrication of optical fibers with induced twisting. Here we utilized the same technique, proposed in work 34 , which is based on preform rotation during the drawing.…”

Section: Drawing Of Microstrucured Optical Fibers With Improved Twistingmentioning

confidence: 99%

Silica microstructured optical fiber with centralized inclusion of seven GeO2-doped capillaries and induced twisting. Part I: fabrication of pilot samples

Bourdine,

Demidov,

Ter-Nersesyants

et al. 2023

Optical Technologies for Telecommunications 2022

View full text Add to dashboard Cite

This work introduces first time fabricated spun silica microstructured optical fiber (MOF) with inclusion of seven GeO2doped capillaries, placed in the central part of MOF cross-section, and induced twisting up to 730 revolutions per meter. Part I discusses technological issues for manufacturing of described complicated twisted fiber optic structure, while Part II presents some results of test series, performed for successfully manufactured twisted MOF pilot samples with typical hexagonal geometry under hole radius 4.40 µm and pitch 9.80 µm, outer "telecommunication" diameter 125 µm, and center part, formed by seven hollow GeO2-doped ring cores with inner radius 2.50 µm, pitch 8.80 µm and refractive index difference n=0.030. Following measurements were performed: measurements of transmission spectra under various twisting order, far-field laser beam profiles, some attempts of fusion splicing of typical telecommunication optical fibers and fabricated MOF with insertion loss estimation, and spectral response measurements of both single and group WDM (Wavelength Division Multiplexing)-channels of commercially available telecom WDM-system under inclusion of 2 m length MOF into various spans of short-range lab fiber optic link.

show abstract

“…In previously published papers [84][85][86][87][88][89][90], we described in detail all previous successfully performed stages of drawing the tower modifications that provide improvements to the twisting of the fabricated MOF from the initial weak 10 revolutions per meter (rpm) up to 66 rpm [84,85], and then further 100, 400, and 500 rpm [89,90]. We chose to develop the method proposed in [1]: the rotation of the optical fiber preformed during the drawing process.…”

Section: Fabrication Of Silica Microstructured Optical Fibers With Im...mentioning

confidence: 99%

“…4 spatially guided modes were manufactured with twisting of 217 rpm, which was ultimately the maximum chirality order for equipment described above that could be possibly induced. At the same time, we tested, verified, and determined the full-cycle technique of the twisted MOF fabrication: from the MOF stack formation, it was redrawn to the MOF cane and then followed the MOF drawing from the cane with twisting under specified excess pressure and at a specified drawing temperature [84,85]. During this stage, we successfully fabricated the following MOFs with twisting from 10 rpm (with a rotation speed of 20 revolutions per minute with an MOF drawing speed of 2 m per minute) up to 66 rpm (with a rotation speed of 200 rpm and an MOF drawing speed of 3 m per minute): hexagonal geometry with shifted core [84,85]; hexagonal geometry, that provides the quasi-ring radial mode field distribution [84,85]; equiangular spiral six-ray geometry [89,90].…”

Section: Fabrication Of Silica Microstructured Optical Fibers With Im...mentioning

confidence: 99%

“…At the same time, we tested, verified, and determined the full-cycle technique of the twisted MOF fabrication: from the MOF stack formation, it was redrawn to the MOF cane and then followed the MOF drawing from the cane with twisting under specified excess pressure and at a specified drawing temperature [84,85]. During this stage, we successfully fabricated the following MOFs with twisting from 10 rpm (with a rotation speed of 20 revolutions per minute with an MOF drawing speed of 2 m per minute) up to 66 rpm (with a rotation speed of 200 rpm and an MOF drawing speed of 3 m per minute): hexagonal geometry with shifted core [84,85]; hexagonal geometry, that provides the quasi-ring radial mode field distribution [84,85]; equiangular spiral six-ray geometry [89,90]. Furthermore, by combining the maximal rotor rotation speed of 200 revolutions per minute and a low drawing speed of 0.9 m per minute, the typical hexagonal geometry MOF with a shifted core under the pitch of 0.65…0.700 and 3…4 spatially guided modes were manufactured with twisting of 217 rpm, which was ultimately the maximum chirality order for equipment described above that could be possibly induced.…”

Section: Fabrication Of Silica Microstructured Optical Fibers With Im...mentioning

confidence: 99%

See 1 more Smart Citation

Twisted Silica Few-Mode Hollow GeO2-Doped Ring-Core Microstructured Optical Fiber

et al. 2023

View full text Add to dashboard Cite

This work presents the first instance of a silica few-mode microstructured optical fiber (MOF) being successfully fabricated with a hollow GeO2-doped ring core and by strongly inducing twisting up to 790 revolutions per meter. Some technological issues that occurred during the manufacturing of the GeO2-doped supporting elements for the large hollow cores are also described, which complicated the spinning of the MOFs discussed above. We also provide the results of the tests performed for the pilot samples—designed and manufactured using the untwisted and twisted MOFs described above—which were characterized by an outer diameter of 65 µm, a hollow ring core with an inner diameter of 30.5 µm, under a wall thickness of 1.7 µm, and a refractive index difference of Δn = 0.030. Moreover, their geometrical parameters, basic transmission characteristics, and the measurements of the far-field laser beam profile patterns are also provided.

show abstract

Design of vortex optical fibers for RoF systems: Part II: pilot samples of chiral microstructured optical fibers

Cited by 5 publications

References 0 publications

Experimental researches and testing of silica twisted six-GeO2-doped core microstructured optical fiber. Part I: fusion splicing with telecommunication optical fibers and differential mode delay map measurements

Experimental researches and testing of silica twisted six-GeO2-doped core microstructured optical fiber. Part I: fusion splicing with telecommunication optical fibers and differential mode delay map measurements

Silica microstructured optical fiber with centralized inclusion of seven GeO2-doped capillaries and induced twisting. Part I: fabrication of pilot samples

Twisted Silica Few-Mode Hollow GeO2-Doped Ring-Core Microstructured Optical Fiber

Contact Info

Product

Resources

About