Optical end monitoring apparatus and method of operating the apparatus
AssigneeFiberpia Co., Ltd.
InventorYoung-bok Choi
Life of this patent
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Abstract
An optical end monitoring apparatus in an optical communication network includes an optical transmitting unit, an optical receiving unit, and a decision unit. The optical transmitting unit generates first and second optical signals with different wavelengths and transmits the first and second optical signals to the optical end terminal over an optical cable. The optical receiving unit receives reflection signals corresponding to the respective first and second optical signals. The decision unit determines whether the optical end terminal is connected to the optical cable using a difference between magnitudes of the respective received reflection signals.
Claims10
An optical end monitoring apparatus in an optical communication network connected over an optical cable, comprising:
- an optical transmitting unit configured to generate a first optical signal with a first wavelength and a second optical signal with a second wavelength, and to transmit the generated first and second optical signals toward an optical end terminal over the optical cable;
- an optical receiving unit configured to receive a first reflection signal corresponding to the first optical signal and a second reflection signal corresponding to the second optical signal, and to provide first and second magnitudes of the respective first and second reflection signals to a decision unit;
- and
- the decision unit configured to determine whether the optical end terminal is connected to the optical cable at an optical end of the optical communication network, using a difference between the first and second magnitudes,
- wherein the decision unit determines that the optical end terminal is not connected to the optical cable when the difference between the first and second magnitudes is equal to or less than a first predetermined value,
- wherein the decision unit determines that the optical end terminal is connected to the optical cable when the difference between the first and second magnitudes is more than the first predetermined value.
An optical end monitoring method in an optical communication network connected over an optical cable, comprising:
- checking whether an upstream signal transmitted from an optical end terminal is received, wherein the optical end terminal is in vicinity of an optical end of the optical communication network;
- determining that the optical end terminal is powered on when the upstream signal is received;
- transmitting a first optical signal with a first wavelength and a second optical signal with a second wavelength toward the optical end terminal over the optical cable when the upstream signal is not received;
- receiving a first reflection signal corresponding to the first optical signal and a second reflection signal corresponding to the second optical signal;
- and
- determining whether the optical end terminal is connected to the optical cable based on a difference between a first magnitude of the first reflection signal and a second magnitude of the second reflection signal.
Dependencies are inferred from the claim text.