Controlling Force in Polarization-Maintaining Fiber Fused Biconical Tapering

Fused biconical tapering (FBT) is an important method of manufacturing polarization-maintaining fiber (PMF) couplers. However, the tension on the ends of the fibers can affect the performance of the coupler. In this paper, a computer-based method of controlling the drawing force was presented. The system includes a drawing mechanism, rotary position encoders, and a control circuit. A three-dimensional model of a permanent magnet and a coil is constructed, and the relationship among the coil current, rotation angle of the clamp, and electromagnetic force is determined using finite element simulations. Electromagnetic force control based on these simulations can be realized. The method is verified experimentally, and it is shown that a drawing force of 0–1.8 gf can be achieved with an error of within 3.04%. This result can be used in the FBT-based manufacture of fiber components such as fiber couplers and gratings.

[1]  B. Halbedel,et al.  Numerical optimization of the magnet system for the Lorentz Force Velocimetry of electrolytes , 2012 .

[2]  M. Farid Golnaraghi,et al.  Design and modeling of a magnetic shock absorber based on eddy current damping effect , 2008 .

[4]  S. Harun,et al.  Theoretical analysis and fabrication of tapered fiber , 2013 .

[5]  D C Johnson,et al.  Power transfer in fused biconical-taper single-mode fiber couplers: dependence on external refractive index. , 1985, Applied optics.

[6]  K. Hill,et al.  Biconical-taper single-mode fiber coupler. , 1981, Optics letters.

[7]  Yon-Do Chun,et al.  Comparison of magnetic levitation force between a permanent magnet and a high temperature superconductor using different force calculation methods , 2002 .

[8]  Metin Sitti,et al.  Modeling and Experimental Characterization of an Untethered Magnetic Micro-Robot , 2009, Int. J. Robotics Res..

[9]  N. Leventis,et al.  Nd-Fe-B permanent magnet electrodes. Theoretical evaluation and experimental demonstration of the paramagnetic body forces. , 2002, Journal of the American Chemical Society.

[10]  Hairong Liu,et al.  The comparison of two methods to manufacture fused biconical tapered optical fiber coupler , 2009, Photonics and Optoelectronics Meetings.

[11]  Marek Ziolkowski,et al.  Fast Computation Technique of Forces Acting on Moving Permanent Magnet , 2010, IEEE Transactions on Magnetics.

[12]  Ma Bin,et al.  Experimental Research of Coupling Fiber-Optic Sensor for Vibration Measurement , 2010, 2010 Symposium on Photonics and Optoelectronics.

[13]  T. Milner,et al.  Polarization-maintaining fiber-based optical low-coherence reflectometer for characterization and ranging of birefringence. , 2003, Optics letters.

[14]  G. Rego,et al.  Tomographic stress profiling of arc-induced long-period fiber gratings , 2005, Journal of Lightwave Technology.

[15]  E. Dianov,et al.  High-temperature stability of long-period fiber gratings produced using an electric arc , 2001 .

[16]  David P. Arnold,et al.  A study of scaling and geometry effects on the forces between cuboidal and cylindrical magnets using analytical force solutions , 2008 .

[17]  Bishnu P. Pal,et al.  Fabrication and Modeling of Fused Biconical Tapered Fiber Couplers , 2003 .