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:
Sep. 14, 2004
Filed:
Mar. 15, 2001
Applicant:
Inventors:
Assignee:
Tera FiberOptics, Fremont, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 1/402 ; G02B 6/28 ; G02B 6/32 ;
U.S. Cl.
CPC ...
H04J 1/402 ; G02B 6/28 ; G02B 6/32 ;
Abstract
Method and system for selectively adding and dropping selected wavelength components &lgr;=&lgr;k and &lgr;=&lgr;k (1≦k ≦k ≦K) in a light signal having a sequence of wavelengths &lgr;k (k=1, 2, . . . , K), using a dual fiber collimator at each end of an OADM device that contains an optical filter that transmits a selected wavelength &lgr;k and reflects the other wavelengths &lgr;k. Connecting two optical communication terminals in a network allows addition and dropping of a selected wavelength. Estimated total optical insertion losses, between the common port and the express port, for 2×2 and 3×3 add/drop combinations are 0.4 dB and 0.8 dB, respectively.