The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2001
Filed:
Mar. 19, 1999
Bernard Raymond Eichenbaum, Basking Ridge, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
A beam splitter/combiner module for multiplexing and/or demultiplexing a plurality of optical signals having at least three different wavelengths &lgr;,, &lgr;,, and &lgr;,traveling through the module. The module includes a first dichroic mirror having low loss transmission over a first preselected range of wavelengths including &lgr;,and &lgr;,so as to substantially transmit signals having wavelengths &lgr;,and &lgr;,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 &lgr;,so as to substantially reflect from the first mirror signals having wavelength &lgr;,. 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 &lgr;,so as to substantially transmit signals having wavelength &lgr;,through the second dichroic mirror. The second dichroic mirror also has high reflectance over a third preselected range of wavelengths including &lgr;,so as to substantially reflect from the second mirror signals having wavelength &lgr;,.