Optical identification element having non-waveguide...

Details Optical identification element having non-waveguide... Optical identification element having non-waveguide...

2005-02-22

2008-10-07

Lavarias, Arnel C (Department: 2872)

Optical: systems and elements

Diffraction

From grating

C385S037000, C385S123000

Reexamination Certificate

active

07433123

ABSTRACT:
An optical identification element (also known herein as a microbead) that is made from pieces of an optical fiber or substrate that includes an inner core or region being surrounded by an outer cladding region. The optical fiber or substrate has an identification code imparted therein containing coded information. The identification code may be in the form of a Bragg grating inscribed or written in either the inner core or outer cladding. The optical identification element may be microscopic in size having a length in a range of 1-1,000 microns or smaller; or for larger applications may have a length of 1.0-1,000 millimeters or more. The outer diameter may be as small as less than 1,000 microns, as well as in a range of 1.0 to 1,000 millimeters for larger applications.

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