US 11,942,999 B2
Submarine cable interface for connection to terrestrial terminals
Massimiliano Salsi, Sunnyvale, CA (US); and Shuang Yin, Sunnyvale, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Nov. 22, 2022, as Appl. No. 17/992,208.
Application 17/992,208 is a division of application No. 17/220,526, filed on Apr. 1, 2021, granted, now 11,539,448.
Prior Publication US 2023/0090500 A1, Mar. 23, 2023
Int. Cl. H02G 15/14 (2006.01); G02B 6/42 (2006.01); G02B 6/44 (2006.01); H04B 10/035 (2013.01); H04B 10/80 (2013.01)
CPC H04B 10/80 (2013.01) [G02B 6/4278 (2013.01); G02B 6/4427 (2013.01); H02G 15/14 (2013.01); H04B 10/035 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An open cable interface comprising:
a first optical path configured to connect to a terrestrial cable of an optical network to a submarine cable, wherein the first optical path is configured to provide first communication signals from the optical network to the submarine cable; and
a second optical path configured to connect the submarine cable to the terrestrial cable of the optical network, wherein the second optical path is configured to provide second communication signals from the submarine cable to the optical network, wherein the first and second communication signals are within a first frequency band; and
a first filter positioned on the first optical path and configured to:
pass the first communication signals; and
filter out secondary signals from the terrestrial cable such that the secondary signals are prevented from reaching the submarine cable, wherein the secondary signals are within a second frequency band that does not overlap with the first frequency band.