Fiber signal loss event identification

1. A system comprising:

a wavelength tunable laser to provide a first optical pulse of a first wavelength and a second optical pulse of a second wavelength to an optical fiber of a telecommunications network;

a reflection detector to:

receive the first reflected pulse and the second reflected pulse, and

determine a first fiber attenuation curve from the first reflected pulse and a second fiber attenuation curve from the second reflected pulse; and

a discontinuous loss event analyzer to:

identify a discontinuous loss event at a discontinuous loss point in at least one of the first fiber attenuation curve and the second first fiber attenuation curve,

determine a return loss slope based on a return loss at the discontinuous loss point for the first fiber attenuation curve and a return loss at the discontinuous loss point for the second first fiber attenuation curve, and

determine whether the discontinuous loss event is a bad fiber bending event based on the return loss slope.

2. The system of claim 1 , wherein, when determining whether the event is a bad fiber bending event, the discontinuous loss event analyzer is further to:

determine whether the return loss slope is greater than zero.

3. The system of claim 1 , further comprising:

a threshold setter to provide a minimum bad fiber bending slope; and

wherein, when determining whether the event is a bad fiber bending event, the discontinuous loss event analyzer is further to:

determine whether the return loss slope is greater than the minimum bad fiber bending slope.

4. The system of claim 3 , wherein, when determining whether the event is a bad fiber bending event, the discontinuous loss event analyzer is further to apply:

if k S >S, then k=bad fiber bending event,

wherein k S is a slope at event k, and S is a minimum bad fiber bending slope.

5. The system of claim 3 , wherein, when providing the minimum bad fiber bending slope, the threshold setter is further configured to:

adjust minimum bad fiber bending slope based on feedback.

6. The system of claim 1 , wherein the discontinuous loss event analyzer is further configured to:

determine that the discontinuous loss event is a bad splice event if the return loss slope is approximately equal to zero.

7. The system of claim 1 , further comprising:

a bad fiber event announcing device to provide at least one report of a bad fiber event to a device associated with a field technician for the optical fiber.

8. The system of claim 7 , wherein the bad fiber event announcing device is further configured to:

request schematics of surrounding infrastructure based on the discontinuous loss event; and

provide the schematics of the surrounding infrastructure to the device associated with the field technician.

9. The system of claim 1 , further comprising a circulator configured to:

amplify the first reflected pulse and the second reflected pulse.

10. The system of claim 1 , wherein the wavelength tunable laser is further configured to:

provide at least one additional optical pulse of at least one additional wavelength.

11. The system of claim 1 , wherein, when identifying the discontinuous loss event, the discontinuous loss event analyzer is further configured to:

receive an identification of the discontinuous loss event from the reflection detector.

12. A system comprising:

a wavelength tunable laser to provide a plurality of optical pulses that include a plurality of different wavelengths to at least one optical fiber of a telecommunications network;

a circulator to redirect reflected pulses from each of the plurality of optical pulses;

a reflection detector configured to:

receive the reflected pulses, and

determine a plurality of fiber attenuation curves from the reflected pulses;

a threshold setter configured to provide a minimum bad fiber bending slope; and

a discontinuous loss event analyzer configured to

identify a discontinuous loss event at a discontinuous loss point in at least one of the plurality of fiber attenuation curves,

determine a return loss slope based on a return loss at the discontinuous loss point for each of the plurality of fiber attenuation curves, and

determine whether the discontinuous loss event is a bad fiber bending event based on the return loss slope and the minimum bad fiber bending slope.

13. The system of claim 12 , further comprising:

a controller configured to set at least one of a number of the plurality of optical pulses or a wavelength of each of the plurality of optical pulses.

14. The system of claim 12 , wherein, when providing the minimum bad fiber bending slope, the threshold setter is further configured to:

adjust minimum bad fiber bending slope based on feedback.

15. The system of claim 12 , wherein, when identifying the discontinuous loss event, the discontinuous loss event analyzer is further configured to:

identify instances along at least one of the plurality of fiber attenuation curves at which there are changes in power over a predetermined maximum distance and a particular threshold percentage.

16. The system of claim 12 , wherein, when providing the minimum bad fiber bending slope, the threshold setter is further configured to:

adjust minimum bad fiber bending slope based on feedback received from at least one of technicians or customers.

17. The system of claim 12 , wherein the discontinuous loss event analyzer is further configured to:

determine that the discontinuous loss event is a bad splice event if the return loss slope is approximately equal to zero.

18. A computer implemented method comprising:

setting a bad fiber bending threshold for determining a bad fiber bending event in an optical fiber of a telecommunications network;

setting at least two wavelengths for optical pulses to be input to the optical fiber;

sending at least one optical pulse at each of the at least two wavelengths into the optical fiber;

performing an optical time domain-reflectometer (OTDR) measurement to determine a fiber attenuation curve for each of the at least two wavelengths;

identifying a discontinuous loss event based on at least one of the fiber attenuation curve for each of the at least two wavelengths;

calculating a loss slope along the at least two wavelengths of the optical pulses;

determining whether the slope at the discontinuous loss event is greater than the bad fiber bending threshold; and

marking the discontinuous loss event as a bad fiber bending event in response to a determination that the slope at the discontinuous loss event is greater than the bad fiber bending threshold.

19. The system of claim 18 , further comprising:

reporting the bad fiber bending event to a device associated with a service provider for the optical fiber.

20. The system of claim 18 , further comprising:

determining that the discontinuous loss event is a bad splice event if the return loss slope is approximately equal to zero.