EP0210003A2
Expired / Lapsed
EP
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Determining splice attenuation
Assignee: Raychem Corp
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Filing: 1986-07-01
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Granted: —
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Expires: 2006-07-01
Abstract
Abstract A method and apparatus for determining a dB loss across an optical fiber splice includes the steps of determining a first maximum detected optical signal when the fiber ends (13, 14) are moved relative to each other in a X direction, determining a second maximum optical signal when the fiber ends are moved relative to each other in a Y direction, determining a third optical signal when the fiber ends are optimally substantially aligned, determining a fourth optical signal when subsequent to the fiber ends actually being secured to each other.
Inventors
- 👤 Nelson M. Shen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 08:43
CPC Classifications
G; G01; G01M; G01M11/00; G01M11/30; G01M11/33; G01M11/35
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
163 words
A method of determining attenuation across an optical fiber splice between a first fiber and a second fiber, comprising the steps of: moving first and second ends of a first optical fiber and a second optical fiber relative to each other in an X and a Y direction; detecting intensities of light in the second fiber as the first and second fiber ends are moved; detecting a first maximum intensity of light as the fiber ends are moved in the X direction; detecting a second maximum intensity of light as the fibers are moved in the Y direction; detecting a third intensity of light after the fiber ends are optimally substantially aligned and the moving means has stopped moving the first and second fiber ends relative to one another; securing the first and second ends together subsequent to stopping the moving means; determining an attenuation caused by an optical fiber splice by using the first and second maximum intensities and the third intensity.
Claim 2
Independent Claim
163 words
A method of determining attenuation across an optical fiber splice between a first fiber and a second fiber, comprising the steps of: moving first and second ends of a first optical fiber and a second optical fiber relative to each other in an X and a Y direction; detecting intensities of light in the second fiber as the first and second fiber ends are moved; detecting a first maximum intensity of light as the fiber ends are moved in the X direction; detecting a second maximum intensity of light as the fibers are moved in the Y direction; detecting a third intensity of light after the fiber ends are optimally substantially aligned and the moving means has stopped moving the first and second fiber ends relative to one another; securing the first and second ends together subsequent to stopping the moving means; determining an attenuation caused by an optical fiber splice by using the first and second maximum intensities and the third intensity.
Claim 3
Dependent Claim
38 words
The method of claim 1, further comprising the step of determining a fourth intensity of light subsequent to securing the first and second fiber ends together, the determination of the attenuation utilizing the fourth intensity of light found.
Claim 4
Dependent Claim
60 words
The method of claim 2, the attenuation being determined by calculating a first dB loss value based upon the first and third intensities, a second dB loss value based upon the second and third intensities, a third dB loss value based upon the third and fourth intensities, the dB attenuation being a sum of the first, second, and third values.
Claim 5
Dependent Claim
15 words
The method of claim 3, the first, second and third values being calculated as follows:
Claim 6
Dependent Claim
18 words
The method of claim 1, the first and second optical fiber ends being secured by glueing them together.
Claim 7
Dependent Claim
20 words
The method of claim 1, the first and second fiber ends being secured to each other by fusing them together.
Claim 8
Dependent Claim
30 words
The method of claim 1, further comprising the step of locally injecting light into the first optical fiber at a bend using a light source and a first optical coupler.
Claim 9
Dependent Claim
33 words
The method of claim 1, further comprising the step of detecting the signals by locally withdrawing light from the second optical fiber at a bend using an optical coupler and a light detector.
Claim 10
Dependent Claim
30 words
The method of claim 7, further comprising the step of locally detecting light from the second optical fiber at a bend using a second optical coupler and a light detector.
Claim 11
Dependent Claim
8 words
An apparatus using the method of claim 1.
References Cited (Backward Citations)
No citation records indexed.
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