Experimental Investigation and Characterization of Fabrication Shaped Clad Optical Fiber by Thermally Polishing Optical Fiber Preforms with CO2 Laser

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F19%3A00518811" target="_blank" >RIV/67985882:_____/19:00518811 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1117/12.2520995" target="_blank" >http://dx.doi.org/10.1117/12.2520995</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1117/12.2520995" target="_blank" >10.1117/12.2520995</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental Investigation and Characterization of Fabrication Shaped Clad Optical Fiber by Thermally Polishing Optical Fiber Preforms with CO2 Laser

Popis výsledku v původním jazyce

We experimentally investigated loss of multimode optical fibers (MMFs) drawn of thermally shaped optical fiber preforms (OFPs). Such preforms are typically used for fabrication of double clad active fibers. The investigation involved undoped shaped MMFs coated with a low refractive index polymer. The fibers were drawn of silica rod, prepared by collapsing a pure silica tube (Heraeus F300, OH content is 0.2 ppm) in the MCVD lathe. Background losses of undoped MMFs with inner cladding of various geometries shaped by CO2 laser were measured via cut-back method. Losses of the shaped MMFs were compared to the loss of the circular and of the mechanically shaped MMF. Constraints, drawbacks and advantages of shaping the fiber preform using the CO2 laser are discussed. Shaping OFPs with CO2 beam provides advantages of quick polishing, smooth surface, and freeform shape. Results show that mechanical polishing technique leads to significant OH content elimination, which is expressed as reduced absorption peaks at wavelengths of 0.945 mu m and 1.24 mu m, which correspond to the third and second overtone, respectively. The average perimeter length of fibers cross section governs absorption at polymer-glass interface

Název v anglickém jazyce

Experimental Investigation and Characterization of Fabrication Shaped Clad Optical Fiber by Thermally Polishing Optical Fiber Preforms with CO2 Laser

Popis výsledku anglicky

We experimentally investigated loss of multimode optical fibers (MMFs) drawn of thermally shaped optical fiber preforms (OFPs). Such preforms are typically used for fabrication of double clad active fibers. The investigation involved undoped shaped MMFs coated with a low refractive index polymer. The fibers were drawn of silica rod, prepared by collapsing a pure silica tube (Heraeus F300, OH content is 0.2 ppm) in the MCVD lathe. Background losses of undoped MMFs with inner cladding of various geometries shaped by CO2 laser were measured via cut-back method. Losses of the shaped MMFs were compared to the loss of the circular and of the mechanically shaped MMF. Constraints, drawbacks and advantages of shaping the fiber preform using the CO2 laser are discussed. Shaping OFPs with CO2 beam provides advantages of quick polishing, smooth surface, and freeform shape. Results show that mechanical polishing technique leads to significant OH content elimination, which is expressed as reduced absorption peaks at wavelengths of 0.945 mu m and 1.24 mu m, which correspond to the third and second overtone, respectively. The average perimeter length of fibers cross section governs absorption at polymer-glass interface

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/GA19-03141S" target="_blank" >GA19-03141S: Výzkum nových geometrií a uspořádání dvouplášťových aktivních vláken pro vláknové lasery s vysokým výkonem</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proc. of SPIE, Micro-structured and Specialty Optical Fibres VI

ISBN

978-1-5106-2725-3

ISSN

0277-786X

e-ISSN

1996-756X

Počet stran výsledku

5

Strana od-do

1102909

Název nakladatele

SPIE

Místo vydání

Bellingham

Místo konání akce

Praha

Datum konání akce

3. 4. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000502109500003