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. 05, 2024
Filed:
May. 29, 2020
Subcom, Llc, Eatontown, NJ (US);
Dmitri G. Foursa, Colts Neck, NJ (US);
Alexei N. Pilipetskii, Colts Neck, NJ (US);
Maxim A. Bolshtyansky, Millstone, NJ (US);
Gregory M. Wolter, Oakhurst, NJ (US);
SubCom, LLC, Eatontown, NJ (US);
Abstract
Techniques for improving gain equalization in C- and L-band ('C+L') erbium-doped fiber amplifier (EDFAs) are provided. For example, the C- and L-band amplification sections of a C+L EDFA may be separated and configured in a parallel arrangement or a serial arrangement. For both the parallel and serial arrangements, the C- and L-band amplification sections may share a common gain flattening filter (GFF) or each amplification section may include and employ a separate GFF. Moreover, in some examples, an “interstage” L-band GFF may be located before or upstream of the L-band amplification section such that the L-band optical signal is gain-equalized or flattened prior to the L-band amplification section amplifying the L-band.