US 12,442,991 B2
Dual lens optical coupling to multicore fiber
Weizhuo Li, Berkeley Heights, NJ (US); Norbert Schlepple, Macungie, PA (US); and Jock T. Bovington, Koenigstein Im Taunus (DE)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Feb. 2, 2023, as Appl. No. 18/163,806.
Prior Publication US 2024/0264387 A1, Aug. 8, 2024
Int. Cl. G02B 6/42 (2006.01)
CPC G02B 6/4207 (2013.01) [G02B 6/4216 (2013.01); G02B 6/4227 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An optical device comprising:
a first multi-channel laser die comprising a first plurality of laser channels at a first front facet of the first multi-channel laser die;
a lens arrangement comprising:
a first collimating lens aligned to the first front facet;
a focusing lens; and
at least one optical component positioned between the first collimating lens and the focusing lens; and
a multicore optical fiber aligned to the first multi-channel laser die through the lens arrangement and comprising a first plurality of optical cores, wherein the at least one optical component comprises:
a polarization controller device positioned between the first collimating lens and the focusing lens, wherein a plurality of optical signals passing between the first collimating lens and the focusing lens also pass through the polarization controller device, and wherein a plurality of optical signals coupled into the multicore optical fiber from the lens arrangement comprise controlled polarizations.