Wavelength-selective multiplexer-demultiplexer

Details Wavelength-selective multiplexer-demultiplexer Wavelength-selective multiplexer-demultiplexer

1984-04-02

1986-11-11

Orsino, Jr., Joseph A.

Multiplex communications

Wide area network

Packet switching

350 9619, H04B 900

Patent

active

046226621

ABSTRACT:
A multiplexer-demultiplexer for different wavelengths carried by optical fibers (10) the ends of which are disposed in the immediate vicinity of the focus of a concave mirror (18) associated with a plane diffraction grating (15) is disclosed.
The multiplexer-demultiplexer consists of four elements that are adhesively attached to one another, namely, a fiber-carrying element (1); a grating-carrying element (15); an intermediary element (3) of the same index as the element (2); and a mirror element (4) having an index of refraction different from that of element (3) and selected to compensate for longitudinal spherical aberration of the mirror (18) for at least one of the wavelengths being utilized.

REFERENCES:
Belovolov--"Spectral Demultiplexer"--Sov. J. Quantum Electronics, Feb. 1982, pp. 252-254.

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