Multiplex communications – Wide area network – Packet switching
Patent
1983-10-25
1986-02-18
Lee, John
Multiplex communications
Wide area network
Packet switching
350 9616, 370 1, G02F 103, H04J 102
Patent
active
045710244
ABSTRACT:
A wavelength selective demultiplexer tuner having an optically transmissive body for receiving an input signal containing a plurality of different wavelengths and transmitting the signal therethrough. An electro-optic block of material is secured to the body of the tuner and a reflective grating or mirror is secured to the electro-optic block of material for redirecting through the body the input signal as a plurality of signals, each containing a different one of the wavelengths. By appropriately varying a voltage placed across the electro-optic block of material, the index of refraction of the block of material changes thereby altering the optical paths followed by the plurality of signals redirected through the body. In this manner, each of the signals containing a different one of the wavelengths can be selectively output from the body at different times and at the same, single location.
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Erlich Jacob N.
Lee John
Singer Donald J.
The United States of America as represented by the Secretary of
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