US 12,438,609 B2
Optical tapping in an indexing architecture
Erik J. Gronvall, Hickory, NC (US)
Assigned to COMMSCOPE TECHNOLOGIES LLC, Hickory, NC (US)
Filed by COMMSCOPE TECHNOLOGIES LLC, Hickory, NC (US)
Filed on Mar. 10, 2022, as Appl. No. 17/691,767.
Application 17/691,767 is a continuation of application No. 17/034,329, filed on Sep. 28, 2020, abandoned.
Application 17/034,329 is a continuation of application No. 16/477,781, granted, now 10,790,899, issued on Sep. 29, 2020, previously published as PCT/US2018/013329, filed on Jan. 11, 2018.
Claims priority of provisional application 62/558,105, filed on Sep. 13, 2017.
Claims priority of provisional application 62/445,561, filed on Jan. 12, 2017.
Prior Publication US 2022/0271833 A1, Aug. 25, 2022
Int. Cl. H04B 10/25 (2013.01); H04B 10/035 (2013.01); H04B 10/2575 (2013.01); H04B 10/2581 (2013.01); H04B 10/27 (2013.01)
CPC H04B 10/035 (2013.01) [H04B 10/25751 (2013.01); H04B 10/2581 (2013.01); H04B 10/2589 (2020.05); H04B 10/27 (2013.01)] 18 Claims
OG exemplary drawing
 
15. A system comprising:
a plurality of indexing terminals, each indexing terminal including an input, a pass-through output, and a drop output, and each indexing terminal indexing optical fibers between the input and the pass-through output while at least one drop fiber is routed to the drop output, the indexing terminals being daisy-chained together so that the input of a subsequent indexing terminal in the chain is connected to the pass-through output of a prior indexing terminal in the chain;
a plurality of tap arrangements daisy-chained together, each of the tap arrangements directing a first portion of a feed signal received at an input of the tap arrangement to a pass-through line and directing a second portion of the feed signal to a drop line, the plurality of tap arrangements including a first tap arrangement that is optically coupled to the drop output of one of the indexing terminals; and
wherein the plurality of index terminals and the plurality of tap arrangements are part of a passive optical network, wherein the plurality of tap arrangements includes a second tap arrangement at an end of the daisy-chain of tap arrangements, the second tap arrangement being optically coupled to another drop output of the one of the indexing terminals and wherein the drop output of the one of the indexing terminals is a forward drop output and the another drop output of the one of the indexing terminals is a rearward drop output so that the daisy-chain of tap arrangements form a redundant path for the system.