Systems and methods for detecting optical network conditions based on signal loss

A system for detecting optical network conditions, comprising:

• at least one optical line terminal (OLT) of an optical network;
• a plurality of optical network terminals (ONTs) of the optical network, the plurality of ONTs optically coupled to the at least one OLT by a plurality of optical fibers;
• and
• a condition detector configured to:
• receive (1) a first value indicative of communication performance for a first optical signal transmitted through the optical network between the OLT and at least one ONT of the plurality of ONTs at a first wavelength, wherein the first value is based on a single measurement of optical attenuation of the first optical signal and (2) a second value indicative of a communication performance of a second optical signal transmitted through the optical network between the OLT and the at least one ONT at a second wavelength, wherein the second value is based on a single measurement of optical attenuation of the second optical signal;
• compare the first value and the second value;
• and
• detect a condition in the optical network based on comparison of the first value and the second value.

A method for detecting optical network conditions based on signal loss, comprising:

• receiving, with processing circuitry, information indicative of communication performance of an optical network in communicating between at least one optical line terminal (OLT) of the optical network and a plurality of optical network terminals (ONTs) of the optical network, the plurality of ONTs optically coupled to the at least one OLT by a plurality of optical fibers;
• determining, with the processing circuitry based on the information, a first value indicative of a measured amount of signal loss for a first optical signal transmitted at a first wavelength through the optical network between the at least one OLT and at least one ONT of the plurality of ONTs;
• calculating, based on a distance between the at least one OLT and the at least one ONT, a second value indicative of an expected amount of signal loss between the at least one OLT and the at least one ONT at the first wavelength;
• calculating, based on a difference between the first value and the second value, a first third value indicative of a signal loss associated with the first optical signal;
• determining, with the processing circuitry based on the information, a fourth value indicative of a measured amount of signal loss for a second optical signal transmitted at a second wavelength through the optical network between the at least one OLT and the at least one ONT;
• calculating, with the processing circuitry based on a distance between the at least one OLT and the at least one ONT, a fifth value indicative of an expected amount of signal loss between the at least one OLT and the at least one ONT at the second wavelength;
• calculating, with the processing circuitry based on a difference between the fourth value and the fifth value, a sixth value indicative of a signal loss associated with the second optical signal;
• comparing, with the processing circuitry, the third value to the sixth value;
• and
• detecting, with the processing circuitry, a condition in the optical network based on the comparing.