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Laser-diode/multimode-fibre coupling analysis using a planoconvex GRIN lens

Laser-diode/multimode-fibre coupling analysis using a planoconvex GRIN lens

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© The Institution of Electrical Engineers
Published

A ray model for a laser diode is introduced for analysing a laser-diode/multimode-fibre coupling system. The validity is examined from the point of view of a far-field pattern. It is shown that the maximum coupling efficiency is obtained between the paraxial image point and the best focus, and decreases as the curvature of the planoconvex GRIN lens increases.

Inspec keywords: optical fibres; optical couplers; lenses; gradient index optics; geometrical optics; semiconductor junction lasers

Other keywords: laser-diode/multimode-fibre coupling system; ray model; paraxial image point; planoconvex GRIN lens; coupling efficiency; far-field pattern

Subjects: Semiconductor lasers; Laser beam characteristics and interactions; Optical lens and mirror design; Lasing action in semiconductors; Fibre optics; Fibre optics and fibre waveguides; Laser beam interactions and properties

References

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      • K. Kawano , O. Mitomi . Coupling characteristic of laser diode to multimode fiber using separate lens methods. Appl. Opt. , 136 - 141
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      • K. Nishizawa , H. Nishi . Coupling characteristics of gradient-index lenses. Appl. Opt. , 1711 - 1714
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      • J. Yamashita , Y. Miake , R. Suganuma , T. Takei . Discussion on coupling efficiency between laser diode and multimode fiber. Tech. Rep. IECE Jpn. , 1 - 6
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      • K. Kawano , H. Miyazawa , O. Mitomi . Effective calculation method for laser-diode/multimode-fibre coupling. Electron. Lett. , 609 - 611
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      • Y. Tachikawa , M. Saruwatari . Consideration of spherical aberration on coupling system between laser diode and multimode fiber. Tech. Rep. IECE Jpn. , 55 - 62
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