Optical wavelength-multiplexing and/or demultiplexing device

Details Optical wavelength-multiplexing and/or demultiplexing device Optical wavelength-multiplexing and/or demultiplexing device

1983-04-11

1988-05-31

Griffin, Robert L.

Multiplex communications

Wide area network

Packet switching

350 9619, 370 1, H04B 900

Patent

active

047486147

ABSTRACT:
The invention relates to an optical wavelength multiplexing and/or demultiplexing device. The device comprises a digital phase grating having at least four steps. The grating diffracts light of at least three different wavelengths in different central diffraction orders. Since the grating period may be high in comparison with the wavelengths light-emitting diodes may be used as light sources.

REFERENCES:
patent: 4111524 (1978-09-01), Tomlinson, III
patent: 4198117 (1980-04-01), Kobayashi
patent: 4362359 (1982-12-01), Dammann et al.
patent: 4449782 (1984-05-01), Korth
Fujii et al., "Optical Demultiplexer"-IEEE Jour. of Quantum Elec., vol. QE-16, No. 2, Feb. 1980, pp. 165-167.
Miki et al., "A Design Concept on Fiber-Optic WDM"-Ntg Fachber (Germany), vol. 73, 1980, pp. 41-45.
Kobayashi et al., "Microoptic Grating Multiplexers"-IEEE Jour. of Quantum Elec., vol. QE 16, No. 1, Jan. 1980, pp. 11-22.
Nicia, A. "Wavelength Multiplexing and Demultiplexing Systems for Singlemode and Multimode Filbers." 7th Euro. conf. on Opt. Comm. Copenhagen (Sep. 1981).
Yen, H. W. "Planar Rowland Spectrometer for Fiber-optic Wavelength Demultiplying" Optics Letters, vol. 6, No. 12, pp. 639-641 (Dec. 1981).
Dammann, H. "Optische Gitter-moderne Anwendungen" Physik in Unserer Zeit, vol. 11, No. 3, pp. 83-91 (May, 1980).

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