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

Kliros, George S.; Divari, P. C.

doi:10.1007/s10854-007-9437-8

Cited by 21 publications

(13 citation statements)

References 8 publications

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“…The overlapping factor (OL) is evaluated by employing the under-mentioned overlap integral [84][85][86];…”

Section: Air-filled Configurationmentioning

confidence: 99%

One-rod core microstructured optical fibers for evanescent sensing applications: an alternative approach

Sharma

Tripathi

2021

Preprint

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The advent of polymer (or plastic) optical fibers (POFs) with porous cross-section has contributed significantly to the sensing applications. We intend to explore the sensing attributes of polymer-based one-rod core microstructured optical fibers (P-MOFs) via utilizing an auxiliary approach. The sensitivity coefficient and the overlapping factor of P-MOF’s introduced design in air-filled and water-filled layouts against the structural parameters are exploited. We reported the overlapping factor of ~ 94% and ~ 82% for the said configurations of the fibers, respectively, at the wavelength of 0.633 µm. The confinement loss, mode-index, and effective mode-area are also evaluated for the anticipated structures. For assessing the confinement loss, an alternative approach based on double-clad fiber (DCF) approximation is employed. The validity of the simulated results is scrutinized with those as documented in the literature. Relative errors are also tabulated.

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“…The overlapping factor (OL) is evaluated by employing the under-mentioned overlap integral [84][85][86];…”

Section: Air-filled Configurationmentioning

confidence: 99%

One-rod core microstructured optical fibers for evanescent sensing applications: an alternative approach

Sharma

Tripathi

2021

Preprint

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“…4a-c. The calculation of coupling loss is based on the overlapping integral technique [20] assuming that a) the LD beam has a circular Gaussian form. This assumption is suitable for LDs with low-aspect ratios.…”

Section: Coupling Coefficientsmentioning

confidence: 99%

Analysis of Coupling Loss between Laser Diodes and Solid-Core Bragg Fibers

Kliros

2009

J Infrared Milli Terahz Waves

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In this paper, using the Galerkin's numerical method and performing an overlapping integral technique, we calculate the coupling loss coefficients of Laser Diodes (LDs) to solid-core Bragg fibers in terms of lateral, axial and angular displacement. For comparison, results concerning coupling to SMF-28 are also presented. Our calculations show that the coupling of solid-core Bragg fibers to LDs has effectively larger tolerance to lateral and axial displacements compared to conventional SMF-28. It is also found that Bragg fibers are promising to attain low-loss free-space coupling with a long working distance. However, the angular tolerance for LD to Bragg-fiber coupling is lower than that of SMF-28.

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“…Because the beam output by the coupler has a divergence angle, and the core diameter of the common SMF is small. Therefore, coupling optical signals fully into SMF is difficult [10]. A multimode fiber is only suitable for short-range and small-capacity communication due to the large bandwidth, large dispersion, and high loss.…”

Section: Introductionmentioning

confidence: 99%

Optical Coupling Efficiency of a Coupler with Double-Combined Collimating Lenses and Thermally Expanded Core Fibers

Zhao

Ye³

et al. 2022

Micromachines

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Improving the coupling efficiency of two optical signals is a hot issue, where the efficiency of optical coupling has a significant effect on the signal transmission over the fiber link. To this end, the Large-Beam Fiber Coupler (LBFC) with a Double-combined Collimating Lens (DCL) and a single-mode TEC fiber structure are proposed in this study. Based on the propagation principle of Gaussian beams and the coupling requirements, the coupling mechanism of the fiber coupler and the coupling mismatch between the coupler is analytically modeled. The model and the optical path are optimized, then the ray tracing is used to calculate the coupling efficiency of inter-coupler signals for different SMF. The coupling efficiency is evaluated through experiments in terms of coupling efficiency and the radial, axial, and angular mismatches between the couplers. The results showed that with a large Mode Field Diameter (MFD), better coupling efficiency can be obtained, i.e., a large MFD of 28 μm is tested with its maximal efficiency of 95.16%. Moreover, the angular mismatch has the most significant impact on the coupling efficiency, while the axial mismatch has the least. The use of large MFD can alleviate the angular mismatch and thus improve the optical coupling efficiency.

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

Cited by 21 publications

References 8 publications

One-rod core microstructured optical fibers for evanescent sensing applications: an alternative approach

One-rod core microstructured optical fibers for evanescent sensing applications: an alternative approach

Analysis of Coupling Loss between Laser Diodes and Solid-Core Bragg Fibers

Optical Coupling Efficiency of a Coupler with Double-Combined Collimating Lenses and Thermally Expanded Core Fibers

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