Apparatus for separating or synthesizing light signals

Details Apparatus for separating or synthesizing light signals Apparatus for separating or synthesizing light signals

1985-01-30

1987-10-27

Lee, John

Multiplex communications

Wide area network

Packet switching

350316, 350 9616, 370 3, G02B 628

Patent

active

047025484

ABSTRACT:
First and second dielectric multilayer film filters are disposed along a straight optical axis and inclined about 45.degree. with respect thereto. The second filter is rotated about the optical axis by a predetermined angle with respect to the first filter so as to divide a path of light incident upon or emitting from the first filter into a first path of light transmitting through the first and second filters, and a second path of light reflected by the first filter. The second path is orthogonal to the first path. The apparatus is used for separating or synthesizing light signals.

REFERENCES:
patent: 3704061 (1972-11-01), Travis
patent: 4474424 (1984-10-01), Wagner
patent: 4531092 (1985-07-01), Shibano
Miyauchi et al, "Compact Wavelength Multiplexer Using Optical-Fiber Pieces," Optics Letters, vol. 5, No. 7, Jul. 1980, pp. 321-322.
"Wavelength-Division-Multiplexing Technology (Invited)" by H. Ishio, Musashino ECL, NTT, Musashino, Japan, Jun. 1983.
"An Optically Accessing Loop System Using Pulse Interlace Technique" by N. Tokura, K. Oguchi and K. Nosu, Yokosuka ECL, NTT, Yokosuka, Japan, Jun. 1983.
"Design and Performance of Multi/Demultiplexer for Subscriber Loop System" by R. Watanabe, K. Sano and J. Minowa, Yokosuka ECL, NTT, Yokosuka, Japan, Jun. 1983.

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