Fiber optic wavelength division multiplexing module

Details Fiber optic wavelength division multiplexing module Fiber optic wavelength division multiplexing module

1989-01-27

1990-06-12

Healy, Brian

Multiplex communications

Wide area network

Packet switching

350 9616, 350 9620, 350 9614, 350 9615, 350413, 350311, 350316, 370 3, 455606, 455610, 455612, 455613, 455617, G02B 632, G02B 626, H04B 900, H04J 100

Patent

active

049327429

ABSTRACT:
A light source or detector equipped with an optically transmissive window is coupled to a juxtaposed collimating lens for directing light onto a first side of a dichroic filter which passes or blocks a selected wavelength of light. A second lens in juxtaposition with a second side of the dichroic filter focuses light either passed or reflected by the filter onto an optical fiber for transmission or reception of optical signals. A second optical fiber is connected to the second lens and to a third lens for which conveys light between the second optical fiber and a dichroic filter for passing a different wavelength of light and reflecting the selected wavelength, the filter being in juxtaposition with a window of an optical detector. All components are embedded in a molded enclosure for protecting the optical elements and optical fibers from environmental conditions.

REFERENCES:
patent: 4213677 (1980-07-01), Sugimoto et al.
patent: 4509827 (1985-04-01), Cowen et al.
patent: 4550975 (1985-11-01), Levinson et al.
patent: 4733931 (1988-03-01), Fan
patent: 4736359 (1988-04-01), Cohen et al.
patent: 4834481 (1989-05-01), Lawson et al.
patent: 4844573 (1989-07-01), Gillham et al.
patent: 4873697 (1989-10-01), Haeussler et al.

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