US 12,231,163 B2
Optical fiber characterization using transmission of shaped ASE
Yinqing Pei, Kanata (CA); David W. Boertjes, Nepean (CA); and Alex W. MacKay, Ottawa (CA)
Assigned to Ciena Corporation, Hanover, MD (US)
Filed by Ciena Corporation, Hanover, MD (US)
Filed on Oct. 3, 2023, as Appl. No. 18/480,022.
Application 18/480,022 is a continuation of application No. 17/437,635, filed on Sep. 9, 2021, granted, now 11,799,546.
Application 17/437,635 is a continuation of application No. PCT/US2020/025177, filed on Mar. 27, 2020.
Application PCT/US2020/025177 is a continuation in part of application No. 16/365,890, filed on Mar. 27, 2019, granted, now 11,139,633, issued on Oct. 5, 2021.
Prior Publication US 2024/0031022 A1, Jan. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 10/07 (2013.01); H04B 10/079 (2013.01)
CPC H04B 10/07951 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method comprising the steps of
receiving an Amplified Spontaneous Emission (ASE) signal on an optical fiber, wherein the ASE signal is transmitted from an ASE source connected to the optical fiber and the ASE signal includes a spectral shape at an input of the optical fiber;
measuring a broadened spectral shape of the received ASE signal where the broadened spectral shape is different from the spectral shape at the input and broadened due to propagation of the ASE signal over the optical fiber; and
determining one or more parameters of the optical fiber based on the broadened spectral shape of the received ASE signal.