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.

Date of Patent:
Feb. 01, 2005

Filed:

Jul. 11, 2002
Applicants:

Jong-youl Kim, Kumi-shi, KR;

Seung-jin Baek, Kumi-shi, KR;

Jae-wan Kim, Taegukwangyok-shi, KR;

Inventors:

Jong-Youl Kim, Kumi-shi, KR;

Seung-Jin Baek, Kumi-shi, KR;

Jae-Wan Kim, Taegukwangyok-shi, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 600 ; G03F 900 ;
U.S. Cl.
CPC ...
Abstract

A photomask is disclosed for the fabrication of an optical fiber block including a first section provided with slit arrays adapted to form an optical fiber alignment region of the optical fiber block while having a uniform slit pitch, partition portions arranged between adjacent ones of the slit arrays while having a pitch larger than the slit pitch, and end portions arranged outside the slit arrays while having a pitch larger than the slit pitch. The photomask also includes a second section adapted to form a stress-reducing recessed region of the optical fiber block etched to a desired depth from the level of the optical fiber alignment region. The photomask also includes auxiliary slit arrays arranged at an interface between the first and second sections. The auxiliary slit array includes at least one slit.


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