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. 18, 2002
Filed:
Apr. 17, 2000
Applicant:
Inventors:
Jean Luc Archambault, Severna Park, MD (US);
Vladimir Pelekhaty, Baltimore, MD (US);
Assignee:
Ciena Corporation, Linthicum, MD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/28 ; G02B 5/26 ;
U.S. Cl.
CPC ...
G02B 5/28 ; G02B 5/26 ;
Abstract
A dual-band optical filter is disclosed which has two transmission bands. The first band is relatively narrow (about 1 nm) and encompasses a wavelength of about 1550 nm, while the second band is relatively broad (greater than 50 nm) to transmit wavelengths in a range of 1300-1400 nm. Accordingly, the filter can be used in wavelength division multiplexed communication systems to simultaneously select a payload channel having a wavelength of approximately 1550 nm, and a 1310 nm service channel.