Optical demultiplexer and optical multiplexer for wavelength...

Details Optical demultiplexer and optical multiplexer for wavelength... Optical demultiplexer and optical multiplexer for wavelength...

2005-02-15

2005-02-15

Lee, Michael G. (Department: 2876)

Optical waveguides

With optical coupler

Plural

C385S015000, C385S037000

Reexamination Certificate

active

06856722

ABSTRACT:
An optical demultiplexer/multiplexer for wavelength division multiplex communication includes: a light irradiating unit for irradiating a spherical wave containing light waves of different wavelengths; optical fibers for respectively receiving the different wavelengths of the demultiplexed light wave; a converting lens for receiving the spherical wave and converting the spherical wave into a parallel wave; WDM filters each for selecting and reflecting the light wave in the parallel wave and transmitting the residual light waves; guide lenses for receiving the light waves reflected by the WDM filters, converging, and transmitting the light waves to the optical fibers; and reflecting mirrors for receiving the light waves and reflecting the light waves toward the WDM filters. The parallel wave advances from the converting lens, is selected and reflected by the WDM filter, reflected, returned to the WDM filter, selected and reflected again, converged by the guide lens, and demultiplexed by the optical fiber every wavelength.

REFERENCES:
patent: 6075632 (2000-06-01), Braun
patent: 6198864 (2001-03-01), Lemoff et al.
patent: 6404947 (2002-06-01), Matsuda
patent: 6542306 (2003-04-01), Goodman
patent: 6563976 (2003-05-01), Grann et al.
patent: 2000-162466 (2000-06-01), None

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