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 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

Integrated-optic wavelength multi- and demultiplexers using a chirped grating and an ion-exchanged waveguide

Toshiaki Suhara, Juha Viljanen, and Matti Leppihalme
Appl. Opt. 21(12) 2195-2198 (1982)

Optical demultiplexer using a silicon concave diffraction grating

Yohji Fujii and Junichiro Minowa
Appl. Opt. 22(7) 974-978 (1983)

Narrow-band ten-channel optical multiplexer and demultiplexer using a Fourier diffraction grating

Masanori lida, Hiroyuki Asakura, Kazou Eda, and Kiyokazu Hagiwara
Appl. Opt. 31(20) 4051-4057 (1992)

Optical demultiplexer using coupling between nonidentical waveguides

Morio Kobayashi and Hiroshi Terui
Appl. Opt. 17(20) 3253-3258 (1978)

Integrated waveguide gratings for wavelength-demultiplexing of free space waves from guided waves

Kenji Kintaka, Junji Nishii, Junpei Ohmori, Yoshitaka Imaoka, Masaaki Nishihara, Shogo Ura, Ryohei Satoh, and Hiroshi Nishihara
Opt. Express 12(14) 3072-3078 (2004)