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Applied Optics

Applied Optics


  • Vol. 33, Iss. 16 — Jun. 1, 1994
  • pp: 3405–3408

Simple optical wavelength-division multiplexer component that uses the lateral focusing scheme of a planar microlens

D. Intani, T. Baba, and K. Iga  »View Author Affiliations

Applied Optics, Vol. 33, Issue 16, pp. 3405-3408 (1994)

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A planar microlens beam guide that is based on the lateral focusing property of gradient-index planar microlenses is realized for a wavelength-division multiplexer (WDM) component without precision alignment. By stacking two planar microlenses, we obtain a nearly circular focused spot of ~ 5-μm diameter by lateral focusing, which is comparable with that of a single-mode fibers. A fabricated WDM component that consists of four stacked lenses and microfilters inserted into the slits made in a substrate is demonstrated. The port-to-port coupling loss is 3–5 dB, and an extinction ratio of larger than 20 dB for multiplexed-demultiplexed wavelengths of 780 and 633 nm, respectively, is achieved.

© 1994 Optical Society of America

Original Manuscript: April 5, 1993
Revised Manuscript: September 16, 1993
Published: June 1, 1994

D. Intani, T. Baba, and K. Iga, "Simple optical wavelength-division multiplexer component that uses the lateral focusing scheme of a planar microlens," Appl. Opt. 33, 3405-3408 (1994)

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