US 11,757,528 B2
Supervision of an optical path including an amplifier
Hans Bissessur, Gentilly (FR); and Omar Ait Sab, Arpajon (FR)
Assigned to Alcatel Submarine Networks, Nozay (FR)
Filed by Alcatel Submarine Networks, Nozay (FR)
Filed on Dec. 6, 2021, as Appl. No. 17/542,719.
Claims priority of application No. 20306517 (EP), filed on Dec. 8, 2020.
Prior Publication US 2022/0182138 A1, Jun. 9, 2022
Int. Cl. H04B 10/077 (2013.01); H04B 10/079 (2013.01); H04B 10/291 (2013.01); H04B 10/071 (2013.01)
CPC H04B 10/0777 (2013.01) [H04B 10/07957 (2013.01); H04B 10/2912 (2013.01); H04B 10/071 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus, comprising:
a remote optically pumped amplifier (ROPA) configured to amplify a first optical signal of a first optical path configured to propagate the first optical signal in a first direction; and
a set of one or more first elements configured to extract a first optical supervisory signal from the first optical path before an input to the ROPA, a set of one or more second elements configured to extract a second optical supervisory signal from the first optical path after an output of the ROPA, and a set of one or more third elements configured to insert the first optical supervisory signal and the second optical supervisory signal into a second optical path configured to propagate a second optical signal in a second direction.