Actively monitored optical fiber panel

• US 9,525,483 B2
• Filed: 03/17/2015
• Issued: 12/20/2016
• Est. Priority Date: 03/17/2015
• Status: Active Grant

• Current Assignee: Verizon Patent and Licensing Incorporated (Verizon Communications Inc.)
• Original Assignee: Verizon Patent and Licensing Incorporated (Verizon Communications Inc.)
• Inventors: Johnson, Raymond IV, Peterson, Daniel L. Jr.
• Primary Examiner(s): Jacob, Oommen
• Application Number:
  US14/660,350
• Publication Number:
  US 20160277103A1
• Time in Patent Office: 644 Days
• Field of Search: 398/29, 398/26, 398/9, 398/1
• US Class Current: 1/1
• CPC Class Codes: H04B 10/0793 Network aspects, e.g. central monitoring of transmission parameters
• CPC Class Codes: H04B 10/0795 Performance monitoring; Measurement of transmission parameters
• CPC Class Codes: H04J 14/021 Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]

Abstract

An optical fiber panel unit includes multiple fiber input ports, each configured to connect to a different one of multiple optical fibers. Each fiber input port includes a connector port configured to connect to a respective fiber panel optical path, an optical tap and a photo-detector. The optical tap is configured to couple to the respective optical path. The photo-detector couples to the optical tap to detect optical signals carried over the respective optical path, and to produce electrical signals that correspond to the detected optical signals. A telemetry circuit analyzes the electrical signals that correspond to the detected optical signals of each respective optical path, and determines at least one of a loss of signal (LOS) or loss of light (LOL) at each of the fiber input ports based on the analysis of the electrical signals.

Claims

1. A first optical fiber panel unit, comprising:

a plurality of fiber input ports, each configured to connect to a different one of multiple optical fibers, wherein each fiber input port comprises;

a connector port configured to connect to a respective fiber panel optical path,

an optical tap configured to couple to the respective optical path, and

a photo-detector coupled to the optical tap and configured to;

detect optical signals carried over the respective optical path, and

produce electrical signals that correspond to the detected optical signals; and

a telemetry circuit, which includes an optical port connected to a fiber link that connects to a second optical fiber panel unit at another location in an optical network, and is configured to;

analyze the electrical signals that correspond to the detected optical signals of each respective optical path,

determine at least one of a loss of signal (LOS) or loss of light (LOL) at each of the fiber input ports based on the analysis of the electrical signals, and

send a report, via the optical port to the second optical fiber panel unit, including a status of the first optical fiber panel unit and any determined LOS or LOL at each of the plurality of fiber input ports.

2. The first optical fiber panel unit of claim 1, wherein the multiple optical fibers connect the first optical fiber panel unit to a central office (CO) Optical Add/Drop Multiplexer (OADM).

3. The first optical fiber panel unit of claim 2, wherein the Optical Add/Drop Multiplexer comprises a Reconfigurable Optical Add/Drop Multiplexer (ROADM).

4. The first optical fiber panel unit of claim 1, wherein the multiple optical fibers connect the first optical fiber panel unit to a central office (CO).

5. The first optical fiber panel unit of claim 1, wherein the telemetry circuit further includes a first port connected to an Internet Protocol (IP) network and wherein the telemetry circuit is further configured to:

send, via the first port, a first report including any determined LOS or LOL at each of the fiber input ports to a network administration node.

6. The first optical fiber panel unit of claim 5, wherein the telemetry circuit further includes a second port connected to the Internet Protocol (IP) network and wherein the telemetry circuit is further configured to:

send, via the second port, a second report including any determined LOS or LOL at each of the fiber input ports to a customer network manager node.

7. The first optical fiber panel unit of claim 1, wherein the first optical fiber panel unit is located at a central office (CO) in a network and is configured to connect between an Optical Add/Drop Multiplexer and a customer location.

8. The first optical fiber panel unit of claim 1, wherein the first optical fiber panel unit is located at a customer location and is configured to connect between the multiple optical fibers and one or more customer site equipment.

9. A method, comprising:

tapping, within a fiber panel comprising a first plurality of fiber input connector ports and a second plurality of fiber output connector ports, multiple optical paths connected to the plurality of fiber input connector ports and supplying a tapped optical output from each of the multiple optical paths to a respective photodetector;

detecting, at each respective photodetector, the tapped optical output to generate electrical signals corresponding to optical signals received via the first plurality of fiber input connector ports and carried via the multiple optical paths;

analyzing, using telemetry circuitry within the fiber panel, the electrical signals to determine performance characteristics associated with each one of the plurality of fiber input connector ports; and

sending, via a fiber panel connection to an external network device, one or more reports that include the determined performance characteristics with each one of the plurality of fiber input connector ports, wherein the external network device comprises a network administration node and wherein the one or more reports identify equipment connected to each of the ports.

10. The method of claim 9, wherein sending the one or more reports comprises sending the one or more reports via an Internet Protocol (IP) network.

11. The method of claim 9, wherein the fiber panel is disposed at a Central Office (CO) within an optical network.

12. The method of claim 9, wherein the fiber panel is disposed at a customer location within an optical network.

13. The method of claim 9, wherein the performance characteristics comprise at least one of a loss of light (LOL) or loss of signal (LOS) associated with each one of the plurality of fiber input connector ports.

14. An optical fiber panel unit, comprising:

a plurality of fiber input ports, each configured to connect to a different one of multiple optical fibers connected to a Central Office (CO) in an optical network, wherein each fiber input port includes a connector connected to a respective fiber panel optical path that carries optical signals within the optical fiber panel unit;

a plurality of fiber output ports, wherein each fiber output port includes a connector port connected to the respective fiber panel optical path that carries the optical signals within the fiber panel unit;

a network connector port configured to connect to an external network; and

a telemetry circuit configured to;

analyze optical input received via each of the plurality of fiber input ports and carried via the respective fiber panel optical path,

determine performance characteristics associated with each fiber input port of the plurality of fiber input ports of the optical fiber panel unit based on the analysis of the optical input, and

send, via the network connector port, one or more reports that include the performance characteristics associated with each fiber input port of the plurality of fiber input ports of the optical fiber panel unit,

wherein at least one of the plurality of fiber output ports connects to site equipment at a customer location and wherein the one or more reports identifies the site equipment.

15. The optical fiber panel unit of claim 14, wherein the performance characteristics comprise a loss of light (LOL) and a loss of signal (LOS) associated with the optical input of each fiber input port of the optical fiber panel unit.

16. An optical fiber panel unit, comprising:

a first fiber input port connected to a first fiber panel optical path and configured to connect to a first input optical fiber, and comprising first components configured to produce first electrical signals that correspond to first optical signals received from the first input optical fiber and carried over the first fiber panel optical path;

a first fiber output port connected to the first fiber panel optical path, and configured to connect to a first output optical fiber that further connects to an optical destination device, and tc carry the first optical signals to the first output optical fiber;

telemetry components configured to;

analyze the first electrical signals, and

determine performance characteristics associated with the first fiber input port based on the analysis of the first electrical signals; and

an optical service channel (OSC) port connected to the telemetry components and configured to connect to an OSC optical fiber that further connects to the optical destination device,

wherein the telemetry components are further configured to;

send a report, via the OSC port, to the optical destination device, wherein the report includes a status of the optical fiber panel unit and the determined performance characteristics associated with the first fiber input port.

17. The optical fiber panel unit of claim 16, wherein the first fiber input port further comprises:

a first connector port connected to the first fiber panel optical path,

a first optical tap coupled to the first fiber panel optical path, and

a first photo-detector coupled to the first optical tap and configured to;

detect the first optical signals carried over the first fiber panel optical path, and

produce the first electrical signals that correspond to the detected first optical signals.

18. The optical fiber panel unit of claim 16, further comprising:

a second fiber input port connected to a second fiber panel optical path and configured to connect to a second input optical fiber, and comprising second components configured to produce second electrical signals that correspond to second optical signals received from the second input optical fiber and carried over the second fiber panel optical path; and

a second fiber output port connected to the second fiber panel optical path, and configured to connect to a second output optical fiber that further connects to the optical destination device, and to carry the second optical signals to the second output optical fiber;

wherein the telemetry components are further configured to;

analyze the second electrical signals, and

determine performance characteristics associated with the second fiber input port based on the analysis of the second electrical signals,

wherein the report further includes the determined performance characteristics associated with the second fiber input port.

19. The optical fiber panel unit of claim 16, further comprising an electrical port connected to an Internet Protocol (IP) network, and

wherein the telemetry components are further configured to:

send, via the electrical port to a network administration node or a customer network manager node, a second report that includes the determined performance characteristics associated with the first fiber input port.

20. The optical fiber panel unit of claim 16, wherein the optical destination device comprises a second optical fiber panel unit, and

wherein, when determining the performance characteristics associated with the first fiber input port, the telemetry components are configured to determine at least one of a loss of signal (LOS) or a loss of light (LOL) at the first fiber input port.