Power flow equation analysis of graded-index polymer optical fibers

Kazuma Nehashi, Yasuhiro Koike

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We have succeeded in development of a simulation specialized for GI POF. In this study, we investigated the propagation characteristics of GI POF by use of this simulation. Propagation properties of multi-mode optical fibers can be calculated by the scalar-wave equation derived from Maxwell's equations. However, calculated impulse response disagrees with measured results. The factors of this disagreement have been generally explained as mode coupling and differential mode attenuation. These effects can be calculated by the power flow equation, as it has been applied for analysis of glass optical fibers and step-index polymer optical fibers. In this study, we applied the power flow equation to the graded-index polymer optical fiber (GI POF). The equation contains several parameters: propagation constants, coupling coefficients, and attenuation coefficient. In order to define these parameters, we fabricated poly methyl methacrylate (PMMA) based GI POF. Propagation constants of the GI POF were calculated by use of the finite-element method. Coupling and attenuation coefficients were estimated based on comparisons of measurements with simulation of differential mode attenuation and differential mode delay. We assigned these values to the power flow equation and solved it by use of the finite difference method. As a result, bandwidth characteristics calculated by this simulation well agreed with measurements. Moreover, it was found that the effect of mode coupling on impulse response of GI POF was more influential than that of differential mode attenuation and that higher modes were subject to mode coupling than lower modes and they were coupled into lower mode.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7213
DOIs
Publication statusPublished - 2009
EventOrganic Photonic Materials and Devices XI - San Jose, CA, United States
Duration: 2009 Jan 272009 Jan 29

Other

OtherOrganic Photonic Materials and Devices XI
CountryUnited States
CitySan Jose, CA
Period09/1/2709/1/29

Fingerprint

Polymer Optical Fiber
Plastic optical fibers
Power Flow
flow equations
optical fibers
Attenuation
polymers
Mode Coupling
Propagation
coupled modes
Impulse Response
Impulse response
Optical Fiber
propagation
attenuation
Optical fibers
attenuation coefficients
Simulation
coupling coefficients
Coefficient

Keywords

  • Differential mode attenuation
  • Gi POF
  • Impulse response
  • Mode coupling
  • Power flow equations

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Nehashi, K., & Koike, Y. (2009). Power flow equation analysis of graded-index polymer optical fibers. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7213). [721318] https://doi.org/10.1117/12.808643

Power flow equation analysis of graded-index polymer optical fibers. / Nehashi, Kazuma; Koike, Yasuhiro.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7213 2009. 721318.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Nehashi, K & Koike, Y 2009, Power flow equation analysis of graded-index polymer optical fibers. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7213, 721318, Organic Photonic Materials and Devices XI, San Jose, CA, United States, 09/1/27. https://doi.org/10.1117/12.808643
Nehashi K, Koike Y. Power flow equation analysis of graded-index polymer optical fibers. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7213. 2009. 721318 https://doi.org/10.1117/12.808643
Nehashi, Kazuma ; Koike, Yasuhiro. / Power flow equation analysis of graded-index polymer optical fibers. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7213 2009.
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