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Easy fabrication of long-period fiber grating by winding a wire around an optical fiber fixed to cylindrical ROD

Title
Easy fabrication of long-period fiber grating by winding a wire around an optical fiber fixed to cylindrical ROD
Authors
Lee, CH[Lee, Cherl-Hee]Lee, J[Lee, Jonghun]Park, J[Park, Jaehee]Kim, KT[Kim, Kwang Taek]
DGIST Authors
Lee, CH[Lee, Cherl-Hee]; Lee, J[Lee, Jonghun]
Issue Date
2012-08
Citation
Microwave and Optical Technology Letters, 54(8), 1937-1941
Type
Article
Article Type
Article
Keywords
Cladding ModesCylindrical RodDiffraction GratingsEasy FabricationGrating PitchHigher IndexLong-Period Fiber GratingLong Period Fiber GratingMode CouplingOptical Fiber CoresOptical Fiber FabricationOptical FibersPolarization DependenceRefractive IndexResonanceResonance WavelengthsTheoretical ValuesTransmission PowerTransmission SpectrumsWavelengthWindingWire
ISSN
0895-2477
Abstract
A new approach is presented for the easy fabrication of wire-winding long-period fiber grating based on the periodic winding of a wire around an optical fiber attached to a cylindrical rod. The periodic pressure of the wire induces change of the refractive index of the optical fiber core, and so the resonance wavelengths of the grating can be easily controlled according to the winding-wire pitch controlled by a microprocessor. At the winding-wire pitch of 500 μm, the spectra show resonance-wavelength dips corresponding to the LP02, LP03, LP04, and LP05cladding modes; the resonance wavelengths go to longer wavelengths at the increased winding pitch of 510 μm; these are in good agreement with theoretical values. The polarization dependence of a resonance wavelength shift of 9 nm and transmission power difference of 2.5 dB was shown at the 520 μm grating pitch. When the diameter of the cylindrical metal rod was smaller, or higher tension by the winding pressure was applied, stronger mode coupling resulted in deeper dips in the transmission spectra according to induced higher index variation. © 2012 Wiley Periodicals, Inc.
URI
http://hdl.handle.net/20.500.11750/3350
DOI
10.1002/mop.26951
Publisher
Wiley Blackwell
Related Researcher
Files:
There are no files associated with this item.
Collection:
Convergence Research Center for Future Automotive Technology1. Journal Articles
Division of IoT∙Robotics Convergence Research1. Journal Articles


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