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. 29, 1999
Filed:
Feb. 14, 1997
Ho-Shang Lee, El Sobrante, CA (US);
Dicon Fiberotics, Inc., Berkeley, CA (US);
Abstract
The characteristic pass and rejection bands of an interference filter may be altered by changing the angle of incidence of light upon the filter. If the input beam is first collimated by a GRIN lens before it is transmitted to the interference filter, the characteristic wavelength bands of the filter can be altered by altering the distance of the input beam from the axis of the GRIN lens. Therefore, ferrules having imbedded therein input/output optical fibers may be provided to vary the distance of the input and output optical paths from the axis of the GRIN lens so that the desired spectral components in these paths are rejected or passed by the filter for performing multiplexing and demultiplexing.