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:
May. 31, 2022
Filed:
Jun. 10, 2019
Ofs Fitel, Llc, Norcross, GA (US);
Benyuan Zhu, Princeton, NJ (US);
OFS FITEL, LLC, Norcross, GA (US);
Abstract
A fiber-based optical amplifying system for use with a multi-wavelength input optical signal operating over a predetermined bandwidth is specifically configured to eliminate the need for a separate gain-flattening filter, improving the power conversion efficiency (PCE) of the system. Both a distributed Raman amplifier (DRA) and an erbium-doped fiber amplifier (EDFA) are used, where the DRA component is configured to use a pump beam with at a power level no greater than 200 mW. The EDFA is configured to exhibit a gain profile the complements that of the DRA, while also providing amplification that is no less than 10dB at any wavelength within the system bandwidth. With these parameters, the combination of the DRA and EDFA is able to maintain an output gain deviation of less than about 2 dB.