کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
464230 697310 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure analysis in the coupling region of fiber coupler with a novel electrical micro-heater
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Microstructure analysis in the coupling region of fiber coupler with a novel electrical micro-heater
چکیده انگلیسی

Fused-tapered fiber coupler is widely used in optical-fiber communication, optical-fiber sensor and optical signal processing. Its optical performance is mainly determined by the glass properties in the coupling region. In this study, the effect of fused biconical taper (FBT) process on glass microstructure of fiber coupler was investigated by testing the microstructure of the cross-section of coupling region. The fiber coupler is fabricated with a novel home-designed electrical heater. Our experimental results show that the boundary between fiber core and fiber cladding become vague or indistinct after FBT under transmission electron microscopy (TEM) and Ge2+ in fiber core diffuses into fiber cladding. Crystallizations are observed in coupling region under scanning electron microscope (SEM) and microscopic infrared (IR), and the micro crystallizations become smaller with the drawing speed increasing. The wave number of fiberglass increases after FBT and it is in proportion to the drawing speed. The analysis of the microstructure in the coupling region explored the mechanism of the improvement in the performance of fiber couplers which can be used for the guidance of fabrication process.


► Fiber coupler fabricated with a novel homemade electrical heater.
► The fiber coupler has different microstructure on the boundary between fiber core and fiber cladding.
► Ge2+ was observed in fiber core diffuses into fiber cladding.
► Crystallizations are observed in coupling region under SEM and microscopic infrared.
► The micro crystallizations become smaller with the drawing speed increasing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Fiber Technology - Volume 17, Issue 6, December 2011, Pages 541–545
نویسندگان
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