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Appl Opt. 1990 Mar 20;29(9):1369-73. doi: 10.1364/AO.29.001369.

Integrated optic wavelength demultiplexer using a coplanar grating lens.

Abstract

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 microm (3-nm separation) with less, similar-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.

PMID:
20563008
[PubMed]
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