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Applied Optics

Applied Optics


  • Vol. 21, Iss. 19 — Oct. 1, 1982
  • pp: 3470–3474

Chemically etched conical microlenses for coupling single-mode lasers into single-mode fibers

G. Eisenstein and D. Vitello  »View Author Affiliations

Applied Optics, Vol. 21, Issue 19, pp. 3470-3474 (1982)

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Coupling efficiency between a laser diode and a single-mode fiber can be greatly increased by using a lensing scheme to match their respective modes. We propose a simple method to selectively etch a fiber end to produce a conical lens whose base coincides with the fiber core. If needed, this lens may be fire polished or arc melted into a hemispherical lens of the same diameter. We present a general theoretical design of both these lenses. We find that high coupling efficiency is expected in cases of practical interest. Initial experimental results are reported in which coupling losses as low as 3 dB were obtained.

© 1982 Optical Society of America

Original Manuscript: January 26, 1982
Published: October 1, 1982

G. Eisenstein and D. Vitello, "Chemically etched conical microlenses for coupling single-mode lasers into single-mode fibers," Appl. Opt. 21, 3470-3474 (1982)

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