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:
Mar. 07, 1995
Filed:
Dec. 22, 1993
Herschel M Marchman, New Providence, NJ (US);
AT&T Corp., Murray Hill, NJ (US);
Abstract
A fiber probe is formed from a cladded optical fiber segment by isotropically etching a lower portion of the fiber segment, followed by cleaving the resulting etched lower portion. The resulting cleaved endface of the fiber segment is then coated with a protective layer which is then patterned by exposure to optical radiation propagating down the core of the fiber segment followed by development. A plasma etching, masked by the thus patterned protective layer, removes a desired height of cladding in the neighborhood of the cleaved endface. Finally, the lower regions of the fiber segment are subjected to a further etching to reduce the width of the tip to a desired value.