Coupling characteristics of laser diodes to high numerical aperture thermally expanded core fibers

We numerically calculate the coupling loss coefficients of Laser Diode (LD) to high numerical aperture (HNA) thermally expanded core (TEC) fiber coupling in terms of lateral, longitudinal and angular misalignments. The propagating fields in the HNA-TEC fiber are obtained by Galerkin’s method and the...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2009, Vol.20 (Suppl 1), p.59-62
Main Authors: Kliros, George S., Divari, Paraskevi C.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Exact sciences and technology
Fibers
Fundamental areas of phenomenology (including applications)
Galerkin methods
Joining
Laser diodes
Lasers
Materials Science
Mathematical analysis
Mathematical models
Numerical aperture
Optical and Electronic Materials
Optics
Physics
Semiconductor lasers
laser diodes
Studies
Tolerances
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Summary:We numerically calculate the coupling loss coefficients of Laser Diode (LD) to high numerical aperture (HNA) thermally expanded core (TEC) fiber coupling in terms of lateral, longitudinal and angular misalignments. The propagating fields in the HNA-TEC fiber are obtained by Galerkin’s method and the coupling loss coefficients are calculated by the overlap integral technique. Our numerical results are compared with recently available experimental data. It is demonstrated that, in HNA-TEC fibers the lateral and longitudinal tolerances were effectively enlarged in comparison with those of conventional SMF-28. It is also found that TEC fibers are good candidates for free-space LD-to-fiber optical coupling scheme with long working distance. However, the angular tolerance of the HNA-TEC fiber is lower than that of the SMF-28.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-007-9437-8