Demonstration of a stand-alone cylindrical fiber coil for optical amplifiers

Steven R. Laxton; Tyler Bravo; Christi K. Madsen

doi:10.1117/12.2188368

26 August 2015 Demonstration of a stand-alone cylindrical fiber coil for optical amplifiers

Steven R. Laxton, Tyler Bravo, Christi K. Madsen

Proceedings Volume 9586, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IX; 958619 (2015) https://doi.org/10.1117/12.2188368
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The design, fabrication and measurement of a cylindrical fiber coil structure is presented that has applications for compact fiber-optic amplifiers. A multimode fiber is used as a surrogate for a dual clad, rare-earth doped fiber for coil fabrication and optical testing. A ray trace algorithm, written in Python, was used to simulate the behavior of light travelling along the waveguide path. An in-house fabrication method was developed using 3D printed parts designed in SolidWorks and assembled with Arduino-controlled stepper motors for coil winding. Ultraviolet-cured epoxy was used to bind the coils into a rigid cylinder. Bend losses are introduced by the coil, and a measurement of the losses for two coil lengths was obtained experimentally. The measurements confirm that bend losses through a multimode fiber, representative of pump light propagating in a dual-clad rare-earth doped fiber, are relatively wavelength independent over a large spectral range and that higher order modes are extinguished quickly while lower order modes transmit through the windings with relatively low loss.

Citation Download Citation

Steven R. Laxton, Tyler Bravo, and Christi K. Madsen "Demonstration of a stand-alone cylindrical fiber coil for optical amplifiers", Proc. SPIE 9586, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IX, 958619 (26 August 2015); https://doi.org/10.1117/12.2188368

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