An eccentric core single-mode fiber,whose core is away from the axis of the fiber,is fabricated by using the fiber preform goniometric-groove method and the stack-and-draw method.An eccentric core single-mode fiber wi...An eccentric core single-mode fiber,whose core is away from the axis of the fiber,is fabricated by using the fiber preform goniometric-groove method and the stack-and-draw method.An eccentric core single-mode fiber without coating is spliced between two single-mode fibers.Fundamental mode and cladding modes are excited at one splicing point between the eccentric core single-mode fiber and the single-mode fiber,and propagate in the eccentric core single-mode fiber,then interfere with each other at the other splicing point.Multi-beam interference transmission spectrum is observed.An in-line fiber interferometric strain sensor based on the eccentric core single-mode fiber is realized.展开更多
基金Supported by the National Basic Research Program of China under Grant No 2010CB328206the National High-Technology Research and Development Program of China Grant No 2008AA01Z215.
文摘An eccentric core single-mode fiber,whose core is away from the axis of the fiber,is fabricated by using the fiber preform goniometric-groove method and the stack-and-draw method.An eccentric core single-mode fiber without coating is spliced between two single-mode fibers.Fundamental mode and cladding modes are excited at one splicing point between the eccentric core single-mode fiber and the single-mode fiber,and propagate in the eccentric core single-mode fiber,then interfere with each other at the other splicing point.Multi-beam interference transmission spectrum is observed.An in-line fiber interferometric strain sensor based on the eccentric core single-mode fiber is realized.
