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. 02, 2004
Filed:
Aug. 15, 2002
Applicant:
Inventors:
Tokuyuki Honda, Sunnyvale, CA (US);
Yevgeniy Churin, San Jose, CA (US);
Long Yang, Union City, CA (US);
Assignee:
JDS Uniphase Corporation, San Jose, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01J 3/51 ;
U.S. Cl.
CPC ...
G01J 3/51 ;
Abstract
An optical channel monitoring device uses a linear variable filter (LVF) disposed in the path of a beam of light for selectively transmitting light in a variable manner along a length of the filter, a photodetector array positioned in the path of light transmitted through the LVF for measuring spectral characteristics of the transmitted light, and collimating means disposed between the input port and the LVF for collimating said beam of light. The device is a low-cost, compact and rugged high-resolution spectrometer for various uses.