Optimized Fabrication of Thulium Doped Silica Optical Fiber Using MCVD

Yassin, Samy; Omar, Nasr Y. M.; Abdul-Rashid, H.A.

doi:10.1007/978-981-10-1477-2_76-1

Cited by 4 publications

(3 citation statements)

References 44 publications

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“…Above the rail, on a static bracket in a V-shaped groove (5), a fiber optic multimode patch cord (7) is laid. One of its ends is equipped with a collimator directed vertically downward into the preform under investigation, and the other is connected to a semiconductor pump diode (4) (BWT K976AB2RN-3.000 W, Beijing, China) with a stabilization wavelength of 976 nm and a power of 3 W. Directly below the diode collimator is a splitter-scatterer (19), which splits off part of the pump radiation to the Thorlabs PDA05CF2 reference photodetector (Newton, NJ, USA) (8).…”

Section: Methodsmentioning

confidence: 99%

“…Notably, for active fibers, including polarization maintaining active ones, the production of the preform also needs the precise control of luminescence characteristics. All these features will be subsequently transferred to the optical fiber, which is drawn from these preforms [6][7][8]. It is optimal if all the main characteristics of the optical fiber (including its longitudinal uniformity) are inherited as correctly as possible from the preform.…”

Section: Introductionmentioning

confidence: 99%

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A Non-Destructive Study of Optical, Geometric and Luminescent Parameters of Active Optical Fibers Preforms

Konstantinov,

Turov,

Latkin

et al. 2024

Optics

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This work is devoted to the scientific and technical aspects of individual stages of active optical fibers preforms’ optical-geometric parameters metrological control. The concept of a system presented makes it possible to carry out a study of a rare earth element distribution in the preform of an active optical fiber to monitor geometric parameters, and also to study the evolution of the refractive index profile along the length of the sample at a qualitative level. As far as it is known, it is the first description of the preform optical, geometric, and luminescent properties measurement within a single automated laboratory bench. Also, the novelty of the approach lies in the fact that the study of the refractive index profile variation along the length of the preform is, for the first time, conducted using the “dry” method, that is, without immersing the sample in synthetic oil, which makes the process less labor-intensive and safer.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Non-Destructive Study of Optical, Geometric and Luminescent Parameters of Active Optical Fibers Preforms

Konstantinov,

Turov,

Latkin

et al. 2024

Optics

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“…The large-mode panda-pattern 25/400 μm PMTDF was manufactured by modified chemical vapor deposition (MCVD) method combined with solution doping technology. Mainly, there were five steps in fabricating the Tm-doped aluminosilicate core rods [6][7] : (1) barrier layer and soot layer deposition, (2) rare-earth solution doping, (3) thermal drying, (4) ventilated dehydration, and (5) sintering and collapse. The details of the fabrication process have been mentioned in many literatures, and will not be repeated here.…”

Section: Perform and Fiber Fabrication Fontsmentioning

confidence: 99%

160W narrow-linewidth fiber laser with a homemade polarization-maintaining Tm-doped fiber

Xiao,

Liao,

Luo

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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High-power narrow-linewidth linearly-polarized Tm-doped fiber lasers operating at 2.0μm have attracted extensive interest in both scientific and industrial fields such as free space communication, remote laser sensing, coherent Doppler lidar wind detection, and gravitational wave detection. In this work, an output power of 160 W narrow-linewidth linearly polarized fiber laser operating at 2007.6 nm was realized by employing a homemade polarization-maintaining Thuliumdoped fiber (PMTDF), corresponding to a slope efficiency of 45% and a 3 dB linewidth of 73 pm. The PMTDF was manufactured by modified chemical vapor deposition (MCVD) method combined with solution doping technology, with core and cladding sizes of 25 µm and 400 µm, respectively. The numerical aperture (NA) of the PMTDF is 0.1 and the cladding absorption is 4 dB/m at 793 nm. During the power scaling, the polarization extinction ratio (PER) maintained higher than 16.5 dB, indicating an excellent polarization maintaining performance of the manufactured fiber. The stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) effects were well-suppressed. This work could provide a good reference for the further power scaling of narrow-linewidth linearly polarized fiber lasers operating at 2.0 μm.

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