Beam splitter/combiner module

A beam splitter/combiner module for multiplexing and/or demultiplexing a plurality of optical signals having at least three different wavelengths lambd1, lambd2, and lambd3 traveling through the module. The module includes a first dichroic mirror having low loss transmission over a first preselected...

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Bibliographic Details
Main Author EICHENBAUM BERNARD RAYMOND
Format Patent
LanguageEnglish
Published 26.06.2001
Edition7
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:A beam splitter/combiner module for multiplexing and/or demultiplexing a plurality of optical signals having at least three different wavelengths lambd1, lambd2, and lambd3 traveling through the module. The module includes a first dichroic mirror having low loss transmission over a first preselected range of wavelengths including lambd1 and lambd2 so as to substantially transmit signals having wavelengths lambd1 and lambd2 through the first mirror and along an optical signal path of the module. The first dichroic mirror also has high reflectance over a second preselected range of wavelengths including lambd3 so as to substantially reflect from the first mirror signals having wavelength lambd3. A second dichroic mirror, disposed along the optical signal path for receiving from the first mirror the signals transmitted through the first mirror, has low loss transmission over a third preselected range of wavelengths including lambd1 so as to substantially transmit signals having wavelength lambd1 through the second dichroic mirror. The second dichroic mirror also has high reflectance over a third preselected range of wavelengths including lambd2 so as to substantially reflect from the second mirror signals having wavelength lambd2.
Bibliography:Application Number: US19990272494