Cascaded GI-fiber chips with a wedge-shaped end for the coupling between an SMF and a high-power LD with large astigmatism

Cascaded GI-fiber chips with a wedge-shaped end for the coupling between an SMF and a high-power LD with large astigmatism

A novel lensed fiber for high-efficiency coupling between a single-mode fiber (SMF) and a high-power laser diode (LD) with large astigmatism of 176 /spl mu/m is proposed and demonstrated. We experimentally confirmed that the proposed lensed fiber had a minimum coupling loss of 2.5 dB including a ref...

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Veröffentlicht in:Journal of lightwave technology 2002-08, Vol.20 (8), p.1545-1548
Hauptverfasser: Yoda, H., Endo, T., Shiraishi, K.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Circuit properties
Diode lasers
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Integrated optics. Optical fibers and wave guides
Lenses
Optical and optoelectronic circuits
Optical coupling
Optical fiber applications
Optical fiber devices
Optical fiber losses
Optical fibers
Optical reflection
Shape
Vision defects
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Beschreibung
Zusammenfassung:A novel lensed fiber for high-efficiency coupling between a single-mode fiber (SMF) and a high-power laser diode (LD) with large astigmatism of 176 /spl mu/m is proposed and demonstrated. We experimentally confirmed that the proposed lensed fiber had a minimum coupling loss of 2.5 dB including a reflection loss of 0.3 dB at both ends of the fiber. In addition the new configuration had a long working distance of 67 /spl mu/m. We also investigated the tolerance characteristics for various displacements.
ISSN:0733-8724
1558-2213
DOI:10.1109/JLT.2002.800795