Birefringent optical wavelength multiplexer/demultiplexer

Details Birefringent optical wavelength multiplexer/demultiplexer Birefringent optical wavelength multiplexer/demultiplexer

1984-09-13

1986-01-28

Arnold, Bruce Y.

Multiplex communications

Wide area network

Packet switching

370 2, G02B 530, H04J 108

Patent

active

045667616

ABSTRACT:
An optical multiplexer/demultiplexer provides for arbitrarily closely spaced wavelength channels, the spacing and locations thereof being determined by the thickness of birefringent crystals such as, for example, quartz. Such a device can also be used for duplexing bidirectional signals. Methods for mechanically tuning the devices to given laser wavelengths are described, as well as simplified constructions which can be used with polarized light sources such as lasers.

REFERENCES:
patent: 2182142 (1939-12-01), Ball et al.
patent: 3532890 (1970-10-01), Denton
patent: 3584221 (1971-06-01), Furukawa
Shirasaki, M. et al, "Compact Optical Isolator for Fibers using Birefringent Wedges", Applied Optics, vol. 21, No. 23, Dec. 1, 1982, pp. 4296-4299.

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