US 11,689,290 B2
Optical communication systems and methods
Zhensheng Jia, Superior, CO (US); Luis Alberto Campos, Superior, CO (US); and Curtis Dean Knittle, Superior, CO (US)
Assigned to Cable Television Laboratories, Inc., Louisville, CO (US)
Filed by CABLE TELEVISION LABORATORIES, INC., Louisville, CO (US)
Filed on Apr. 18, 2022, as Appl. No. 17/723,025.
Application 17/723,025 is a continuation of application No. 17/169,600, filed on Feb. 8, 2021, granted, now 11,309,969.
Application 17/169,600 is a continuation of application No. 16/600,324, filed on Oct. 11, 2019, granted, now 10,917,177, issued on Feb. 9, 2021.
Application 16/600,324 is a continuation of application No. 15/861,303, filed on Jan. 3, 2018, granted, now 10,447,404, issued on Oct. 15, 2019.
Application 15/861,303 is a continuation of application No. 15/283,632, filed on Oct. 3, 2016, granted, now 9,912,409, issued on Mar. 6, 2018.
Claims priority of provisional application 62/321,211, filed on Apr. 12, 2016.
Prior Publication US 2022/0239377 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04J 14/00 (2006.01); H04B 10/50 (2013.01); H04B 10/64 (2013.01); H04B 10/532 (2013.01); H04B 10/63 (2013.01); H04J 14/04 (2006.01); H04J 14/06 (2006.01)
CPC H04B 10/504 (2013.01) [H04B 10/502 (2013.01); H04B 10/505 (2013.01); H04B 10/506 (2013.01); H04B 10/532 (2013.01); H04B 10/63 (2013.01); H04B 10/64 (2013.01); H04J 14/04 (2013.01); H04J 14/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A transceiver for an optical network, comprising:
a first child laser;
a child modulator configured to injection lock the first child laser to a parent frequency of a single mode of a laser source signal; and
an input portion configured to (i) receive a first optical modulated signal on a first coherent tone of the laser source signal; (ii) receive a first optical unmodulated signal on a second coherent tone of the laser source signal, and (iii) route the first optical unmodulated signal on the second coherent tone to the child modulator,
wherein a frequency of the second coherent tone is held constant to a frequency of the first coherent tone,
wherein the child modulator is further configured to output a second optical modulated signal on the second coherent tone.