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Applied Optics

Applied Optics


  • Vol. 29, Iss. 9 — Mar. 20, 1990
  • pp: 1369–1373

Integrated optic wavelength demultiplexer using a coplanar grating lens

Shogo Ura, Masaaki Morisawa, Toshiaki Suhara, and Hiroshi Nishihara  »View Author Affiliations

Applied Optics, Vol. 29, Issue 9, pp. 1369-1373 (1990)

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An integrated optic wavelength-demultiplexer (IOWD) is proposed and demonstrated. A coplanar grating lens in a single-mode slab waveguide is utilized for wavelength separating and focusing functions. The grating lens and input/output channel waveguides are monolithically integrated in a waveguiding film on a rectangular Si substrate. The IOWD was designed for demultiplexing nine wavelengths from 0.778 to 0.802 μm (3-nm separation) with ≲–20-dB crosstalk. The device requires no additional collimating or focusing lenses and was fabricated by a planar process including an electron-beam writing technique. The demultiplexing principle is demonstrated by elementary experiments using single-mode laser diodes.

© 1990 Optical Society of America

Original Manuscript: June 27, 1989
Published: March 20, 1990

Shogo Ura, Masaaki Morisawa, Toshiaki Suhara, and Hiroshi Nishihara, "Integrated optic wavelength demultiplexer using a coplanar grating lens," Appl. Opt. 29, 1369-1373 (1990)

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