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US 2017/0322112 A1Published application
Merging technique for otdr traces captured by using different settings
AssigneeAFL Telecommunications LLC
InventorFang Xu
Life of this patent
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Abstract
An Optical Time Domain Reflectometer (OTDR) tests an optical fiber by generating, transmitting, and receiving light signals from an optical fiber. The OTDR generates light signals having different characteristics and stitches these light signals into an OTDR trace. Backscatter and properties such as dynamic range effect the quality of the OTDR trace.
Claims12
An Optical Time Domain Reflectometer (OTDR) comprising:
- a processor;
- and
- a memory storing executable instructions that, when executed by the processor, cause the processor to perform:
- generating a first light signal comprising a light pulse-width having a first duration;
- generating a second light signal comprising a light pulse-width having a second duration longer than the first duration;
- generating a third light signal comprising a light pulse-width having a third duration longer than the second duration;
- transmitting the first light signal, the second light signal and the third light signal to an optical fiber;
- receiving reflections of the first light signal, the second light signal and the third light signal from the optical fiber;
- converting the reflections into a first electrical signal, corresponding to the first light signal, a second electrical signal, corresponding to the second light signal, and a third electrical signal, corresponding to the third light signal;
- stitching a first OTDR trace corresponding to a portion of the first electrical signal to a second OTDR trace corresponding to a portion of the second electrical signal;
- and
- stitching the second OTDR trace to a third OTDR trace corresponding to a portion of the third electrical signal, wherein
- the first OTDR trace represents the light pulse-width having the first duration,
- the second OTDR trace represents the light pulse-width having the second duration, and
- the third OTDR trace represents the light pulse-width having the third duration.
12 more elements
A method of using an Optical Time Domain Reflectometer (OTDR) comprising:
- generating a first light signal comprising a light pulse-width having a first duration;
- generating a second light signal comprising a light pulse-width having a second duration longer than the first duration;
- generating a third light signal comprising a light pulse-width having a third duration longer than the second duration;
- transmitting the first light signal,the second light signal and the third light signal to an optical fiber;
- receiving reflections of the first light signal, the second light signal and the third light signal from the optical fiber;
- converting the reflections into a first electrical signal, corresponding to the first light signal, a second electrical signal, corresponding to the second light signal, and a third electrical signal, corresponding to the third light signal;
- stitching a first OTDR trace corresponding to a portion of the first electrical signal to a second OTDR trace corresponding to a portion of the second electrical signal;
- stitching the second OTDR trace to a third OTDR trace corresponding to a portion of the third electrical signal, wherein
- the first OTDR trace represents the light pulse-width having the first duration,
- the second OTDR trace represents the light pulse-width having the second duration, and
- the third OTDR trace represents the light pulse-width having the third duration.
8 more elements
Dependencies are inferred from the claim text.