US 11,711,143 B2
Methods for estimating modal bandwidth spectral dependence
Jose M. Castro, Naperville, IL (US); Richard J. Pimpinella, Frankfort, IL (US); Bulent Kose, Burr Ridge, IL (US); Brett Lane, Hinsdale, IL (US); Yu Huang, Orland Park, IL (US); and Asher S. Novick, New York, NY (US)
Assigned to Panduit Corp., Tinley Park, IL (US)
Filed by Panduit Corp., Tinley Park, IL (US)
Filed on Jan. 25, 2022, as Appl. No. 17/583,357.
Application 17/583,357 is a continuation of application No. 17/161,116, filed on Jan. 28, 2021, granted, now 11,233,563, issued on Jan. 25, 2022.
Application 17/161,116 is a continuation of application No. 16/341,536, abandoned, previously published as PCT/US2017/055307, filed on Oct. 5, 2017.
Claims priority of provisional application 62/407,695, filed on Oct. 13, 2016.
Prior Publication US 2022/0149936 A1, May 12, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 10/073 (2013.01); G01M 11/08 (2006.01); H04B 10/2581 (2013.01); G01M 11/00 (2006.01); H04B 10/079 (2013.01)
CPC H04B 10/0731 (2013.01) [G01M 11/338 (2013.01); H04B 10/07951 (2013.01); H04B 10/2581 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method for generating a mapping model for use in estimating the modal bandwidth of a multimode fiber at a second wavelength (λS), based on a DMD measurement of first wavelength (λM), comprising:
selecting a population of multimode fibers (600);
performing a DMD measurement for an algorithm training function for each multimode fiber of the population of multimode fibers at the first wavelength and the second wavelength (604);
extracting at least one signal feature of the DMD measurement from each multimode fiber of the population of multimode fibers at the first wavelength and the second wavelength,
the signal feature being at least one of a centroid, mean power, peak power value and position, and root mean square (RMS) width of the DMD measurement at the first wavelength and the second wavelength respectively (608);
mapping the DMD measurement of the first and second wavelength against the at least one signal feature to determine coefficients of the mapping model (608).