A new technique for the relative measurement of scatter levels in single mode fibres
A new technique for the relative measurement of scatter levels in single mode fibres
The ability to measure relative scatter levels in single-mode fibres is essential for minimising fibre losses in telecommunications fibres operating in the 2nd and 3rd window for optical communications. In this way fabrication processes can be optimised in response to small improvements in measured scatter levels. Surprisingly, there is no simple way in which this can be done with sufficient accuracy to suit current very-low fibre scatter losses. We therefore describe a new sensitive technique to separate the Rayleigh scatter loss from the total loss in a single mode fibre. In this, a reference fibre, the scatter loss of which may, if required, be determined by calorimetric techniques, is spliced to the fibre under investigation. The splice loss is then probed using OTDR. The backscattered light powers from each side of the splice are compared by using the test and reference fibres in turn as the launch fibre. The technique is particularly suited to determining very small changes in scatter from fibre to fibre and is therefore ideal for process control and optimisation,
Fermann, M.E.
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Poole, S.B.
67918af2-6d57-43ab-bfdb-89f9a9a78afe
Payne, D.N.
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Martinez, F.
15b6db52-7951-4b16-b3ac-ba0a8ec1699b
28 May 1986
Fermann, M.E.
7b069725-c906-4b27-9b6d-1034b99b0cf7
Poole, S.B.
67918af2-6d57-43ab-bfdb-89f9a9a78afe
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Martinez, F.
15b6db52-7951-4b16-b3ac-ba0a8ec1699b
Fermann, M.E., Poole, S.B., Payne, D.N. and Martinez, F.
(1986)
A new technique for the relative measurement of scatter levels in single mode fibres.
IEE Colloquium Test Equipment for Optical Communications Systems, London, United Kingdom.
Record type:
Conference or Workshop Item
(Paper)
Abstract
The ability to measure relative scatter levels in single-mode fibres is essential for minimising fibre losses in telecommunications fibres operating in the 2nd and 3rd window for optical communications. In this way fabrication processes can be optimised in response to small improvements in measured scatter levels. Surprisingly, there is no simple way in which this can be done with sufficient accuracy to suit current very-low fibre scatter losses. We therefore describe a new sensitive technique to separate the Rayleigh scatter loss from the total loss in a single mode fibre. In this, a reference fibre, the scatter loss of which may, if required, be determined by calorimetric techniques, is spliced to the fibre under investigation. The splice loss is then probed using OTDR. The backscattered light powers from each side of the splice are compared by using the test and reference fibres in turn as the launch fibre. The technique is particularly suited to determining very small changes in scatter from fibre to fibre and is therefore ideal for process control and optimisation,
More information
Published date: 28 May 1986
Additional Information:
Digest No 1986/85
Venue - Dates:
IEE Colloquium Test Equipment for Optical Communications Systems, London, United Kingdom, 1986-05-28
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 77650
URI: http://eprints.soton.ac.uk/id/eprint/77650
PURE UUID: 511fc22f-0594-46f3-939c-b0f683d3d37c
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Date deposited: 11 Mar 2010
Last modified: 13 Mar 2024 23:56
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Contributors
Author:
M.E. Fermann
Author:
S.B. Poole
Author:
F. Martinez
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