US 11,705,694 B1
Systems and methods for optical injection-locking in an access network
Haipeng Zhang, Broomfield, CO (US); Zhensheng Jia, Superior, CO (US); Luis Alberto Campos, Superior, CO (US); Mu Xu, Broomfield, CO (US); and Junwen Zhang, Broomfield, CO (US)
Assigned to Cable Television Laboratories, Inc., Louisville, CO (US)
Filed by CABLE TELEVISION LABORATORIES, INC., Louisville, CO (US)
Filed on Feb. 26, 2021, as Appl. No. 17/187,237.
Claims priority of provisional application 62/981,864, filed on Feb. 26, 2020.
Int. Cl. H01S 3/16 (2006.01); H01S 5/40 (2006.01); H01S 5/14 (2006.01); H01S 5/065 (2006.01); H01S 5/00 (2006.01); H01S 5/028 (2006.01); H04B 10/50 (2013.01)
CPC H01S 5/4006 (2013.01) [H01S 5/005 (2013.01); H01S 5/0288 (2013.01); H01S 5/0656 (2013.01); H01S 5/14 (2013.01); H01S 5/141 (2013.01); H04B 10/503 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An injection locking laser source for an optical communications system, the injection locking laser source comprising:
a laser cavity configured to receive, from a remote primary laser source, an externally injected low linewidth primary light signal, wherein the laser cavity includes a cavity length, a cavity facet reflectivity, and a cavity quality factor; and
an emitting region configured to output a secondary light source injection locked to the externally injected low linewidth primary light signal at a stable detuning frequency based on a steady-state photon number, a steady-state phase, and a steady-state carrier number of the injection locking laser source,
wherein the steady-state photon number, the steady-state phase, and the steady-state carrier number represent substantially no time variation in a photon number, a phase, and a carrier number of the injection locking laser source, respectively.