Microstructure analysis in the coupling region of fiber coupler with a novel electrical micro-heater

Cijun Shuai; Chengde Gao; Yi Nie; Huanlong Hu; Shuping Peng

doi:10.1016/j.yofte.2011.06.015

Microstructure analysis in the coupling region of fiber coupler with a novel electrical micro-heater

Cijun Shuai, Chengde Gao, Yi Nie, Huanlong Hu, Shuping Peng

Research output: Journal Publication › Article › peer-review

7 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	541-545
Number of pages	5
Journal	Optical Fiber Technology
Volume	17
Issue number	6
DOIs	https://doi.org/10.1016/j.yofte.2011.06.015
Publication status	Published - Dec 2011
Externally published	Yes

Keywords

Fiber coupler
Glass properties
Morphological microstructure

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering
Control and Systems Engineering

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10.1016/j.yofte.2011.06.015

Cite this

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title = "Microstructure analysis in the coupling region of fiber coupler with a novel electrical micro-heater",

abstract = "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.",

keywords = "Fiber coupler, Glass properties, Morphological microstructure",

author = "Cijun Shuai and Chengde Gao and Yi Nie and Huanlong Hu and Shuping Peng",

note = "Funding Information: This work is supported by the following funds: (1) the Natural Science Foundation of China ( 50875267 ); (2) The foundation for the author of national excellent doctoral dissertation of PR China ( 201032 ); (3) Program for New Century Excellent Talents in University ( NCET-10-0792 ); (4) Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences ; (5) The Open-End Fund for the Valuable and Precision Instruments of Central South University .",

year = "2011",

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doi = "10.1016/j.yofte.2011.06.015",

language = "English",

volume = "17",

pages = "541--545",

journal = "Optical Fiber Technology",

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AU - Shuai, Cijun

AU - Gao, Chengde

AU - Nie, Yi

AU - Hu, Huanlong

AU - Peng, Shuping

N1 - Funding Information: This work is supported by the following funds: (1) the Natural Science Foundation of China ( 50875267 ); (2) The foundation for the author of national excellent doctoral dissertation of PR China ( 201032 ); (3) Program for New Century Excellent Talents in University ( NCET-10-0792 ); (4) Open Research Fund of State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences ; (5) The Open-End Fund for the Valuable and Precision Instruments of Central South University .

PY - 2011/12

Y1 - 2011/12

N2 - 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.

AB - 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.

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KW - Glass properties

KW - Morphological microstructure

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Microstructure analysis in the coupling region of fiber coupler with a novel electrical micro-heater

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Keywords

ASJC Scopus subject areas

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