Optical network communication system with embedded optical time domain reflectometer and method of operation thereof
First Claim
1. A method of operation of an optical network communication system comprising:
- sending a downstream data message at a downstream data wavelength in an optical link attached to an optical fiber;
sending an optical time domain reflectometry (OTDR) broadcast pattern continuously at an OTDR wavelength different from the downstream data wavelength in the optical link, the downstream data message and the OTDR broadcast pattern sent simultaneously;
splitting an OTDR reflected response pattern with an optical element configured to split optical power equally for the OTDR wavelength to reduce an optical power penalty in a planar lightwave circuit;
receiving the OTDR reflected response pattern on a broadband photo detector during an open time slot not used for receiving an upstream data message for indicating an optical fault; and
calculating an error distance along the optical fiber based on the optical fault.
1 Assignment
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Accused Products
Abstract
A system and method of operation of an optical network communication system includes: an optical fiber; an optical link attached to the optical fiber; a data transmitter for sending a downstream data message at a downstream data wavelength in the optical link; an optical time domain reflectometry (OTDR) transmitter for sending a OTDR broadcast pattern continuously at an OTDR wavelength different from the downstream data wavelength in the optical link; a broadband photo detector coupled to the optical fiber; and an OTDR receiver for receiving an OTDR reflected response pattern on the broadband photo detector during an open time slot not used for receiving an upstream data message for indicating an optical fault and for calculating an error distance along the optical fiber based on the optical fault.
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Citations
21 Claims
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1. A method of operation of an optical network communication system comprising:
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sending a downstream data message at a downstream data wavelength in an optical link attached to an optical fiber; sending an optical time domain reflectometry (OTDR) broadcast pattern continuously at an OTDR wavelength different from the downstream data wavelength in the optical link, the downstream data message and the OTDR broadcast pattern sent simultaneously; splitting an OTDR reflected response pattern with an optical element configured to split optical power equally for the OTDR wavelength to reduce an optical power penalty in a planar lightwave circuit; receiving the OTDR reflected response pattern on a broadband photo detector during an open time slot not used for receiving an upstream data message for indicating an optical fault; and calculating an error distance along the optical fiber based on the optical fault. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operation of an optical network communication system comprising:
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sending a downstream data message at a downstream data wavelength in an optical link attached to an optical fiber; sending an optical time domain reflectometry broadcast pattern continuously at an OTDR wavelength different from the downstream data wavelength in the optical link, the downstream data message and the OTDR broadcast pattern sent simultaneously; splitting an OTDR reflected response pattern with a 2×
2 broadband splitter configured to split optical power equally for the OTDR wavelength and an upstream data wavelength to reduce an optical power penalty in a planar lightwave circuit;receiving an upstream data message on a broadband photo detector during an upstream time slot; receiving the OTDR reflected response pattern on the broadband photo detector during an open time slot not used for receiving the upstream data message for indicating an optical fault; and calculating an error distance along the optical fiber based on the optical fault. - View Dependent Claims (7, 8, 9, 10)
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11. An optical network communication system comprising:
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an optical fiber coupled to a planar lightwave circuit; an optical link attached to the optical fiber; a data transmitter for sending a downstream data message at a downstream data wavelength in the optical link; an optical time domain reflectometry (OTDR) transmitter for sending an optical time domain reflectometry broadcast pattern continuously at an OTDR wavelength different from the downstream data wavelength in the optical link, the OTDR broadcast pattern sent simultaneously with the downstream data message; an optical element, coupled to the data transmitter and the OTDR transmitter, configured to split optical power equally for the OTDR wavelength to reduce an optical power penalty in the planar lightwave circuit; a broadband photo detector coupled to the optical element and the optical fiber; and an optical time domain reflectometry receiver for receiving an OTDR reflected response pattern on the broadband photo detector during an open time slot not used for receiving an upstream data message for indicating an optical fault optical terminal and for calculating an error distance along the optical fiber based on the optical fault. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A bi-directional optical subassembly for terminating an optical network communication system comprising:
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a data transmitter for sending a downstream data message at a downstream data wavelength; an optical time domain reflectometry (OTDR) transmitter for sending an OTDR broadcast pattern continuously at an OTDR wavelength different from the downstream data wavelength, the OTDR broadcast pattern transmitted simultaneously with the downstream data message; an optical element, coupled to the data transmitter and the OTDR transmitter, configured to split optical power equally for the OTDR wavelength to reduce an optical power penalty in a planar lightwave circuit; a broadband photo detector; a data receiver for receiving an upstream data message on the broadband photo detector during an upstream time slot; and an OTDR receiver for receiving an OTDR reflected response pattern on the broadband photo detector during an open time slot not used for receiving the upstream data message and for calculating an error distance along the optical fiber based on the OTDR reflected response pattern.
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Specification