Rogue ONU detection via photonic mixing
View Patent ↗A system, method, and computer readable medium for rogue Optical Network Unit (ONU) detection via photonic mixing, comprises a first Wavelength Division Multiplexer (WDM), a second WDM communicably coupled to the first WDM, a non-linear medium communicably coupled to the second WDM, and a photodetector communicably coupled to the non-linear medium, wherein the first WDM transmits a first upstream beam and a second upstream beam to the second WDM, wherein the first upstream beam is a normal upstream beam and wherein the second upstream beam is a rogue upstream beam, wherein the second WDM transmits the normal upstream beam and the rogue upstream beam to the non-linear medium, wherein the non-linear medium mixes the normal upstream beam and the rogue upstream beam resulting in a mixed beam, wherein the non-linear medium transmits the mixed beam to the photodetector, and wherein the photodetector analyzes the mixed beam to indicate the presence of a rogue ONU.
1. A system for rogue Optical Network Unit (ONU) detection via photonic mixing, comprising:
a first Wavelength Division Multiplexer (WDM);
a second WDM communicably coupled to the first WDM;
a non-linear medium communicably coupled to the second WDM; and
a photodetector communicably coupled to the non-linear medium;
wherein the first WDM transmits a first upstream beam and a second upstream beam to the second WDM;
wherein the first upstream beam is a normal upstream beam and wherein the second upstream beam is a rogue upstream beam;
wherein the second WDM transmits the normal upstream beam and the rogue upstream beam to the non-linear medium;
wherein the non-linear medium mixes the normal upstream beam and the rogue upstream beam resulting in a mixed beam;
wherein the non-linear medium transmits the mixed beam to the photodetector; and
wherein the photodetector analyzes the mixed beam to indicate the presence of a rogue ONU.
2. The system of claim 1 , wherein the first WDM transmits a downstream beam and receives the upstream beam via a fiber pigtail.
3. The system of claim 1 , wherein the photodetector is optimized for 655 nm.
4. The system of claim 1 , wherein the mixed beam is a new frequency of light.
5. The system of claim 4 , wherein the new frequency of light is equal to a frequency of a normal ONU laser plus a frequency of a rogue ONU laser.
6. The system of claim 1 , wherein the first WDM allows for two-way traffic on a single optical fiber.
7. The system of claim 6 , wherein the two-way traffic includes downstream traffic at 1490 nm and upstream traffic at 1310 nm.
8. The system of claim 1 , wherein the first WDM receives a downstream beam from a distributed feedback laser.
9. The system of claim 8 , wherein the first WDM transmits the downstream beam to a normal ONU.
10. The system of claim 1 , wherein the first WDM receives the first upstream beam from a normal ONU and receives the second upstream beam from the rogue ONU.
11. The system of claim 1 , wherein the second WDM transmits the upstream beam to a photodiode/amplifier.