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Novel angle-resolved interrogation method for double-clad doped fibers and high-power fiber laser components

Novel angle-resolved interrogation method for double-clad doped fibers and high-power fiber laser components
Novel angle-resolved interrogation method for double-clad doped fibers and high-power fiber laser components
We present the novel use of a well-known angular interrogation method [1] for characterizing the absorption and loss of multimode doped fibers [2] and high-power fiber laser components, such as cladding mode-strippers [3]. Both meridional and skew rays can be excited by launching light at an angle to the axis of the fiber under test, as shown in the setup of Fig. 1(a). After propagating through the fiber under test, the power of the received light is measured with an integrating sphere that captures all angles. Fig. 1(c) shows the characterization of different cladding mode-strippers (MS). The reference fiber is a circular coreless fiber formed by low-loss synthetic silica glass and low-index polymer. It has a numerical aperture (NA) of ~0.44 and it is typically used for pump power delivery. MS#1 is less effective than MS#2 at attenuating both low- and higher-order cladding modes. The MS#2 results on the other hand, show that only light in the core (NA<0.1) remains, which is ideal for a cladding mode stripper.
Optical Society of America
Chen, G.Y.
b766d3f7-a6dc-4c15-8f00-17ad044348c1
Codemard, C.A.
3aa50483-b61c-4e7e-b178-c9a88bb47bef
Chan, J.S.
7339d99a-1d44-4313-91a7-8d2452b21069
Gorman, P.M.
db066f89-4918-4ddc-bab5-4dcec70354b7
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701
Chen, G.Y.
b766d3f7-a6dc-4c15-8f00-17ad044348c1
Codemard, C.A.
3aa50483-b61c-4e7e-b178-c9a88bb47bef
Chan, J.S.
7339d99a-1d44-4313-91a7-8d2452b21069
Gorman, P.M.
db066f89-4918-4ddc-bab5-4dcec70354b7
Zervas, M.N.
1840a474-dd50-4a55-ab74-6f086aa3f701

Chen, G.Y., Codemard, C.A., Chan, J.S., Gorman, P.M. and Zervas, M.N. (2015) Novel angle-resolved interrogation method for double-clad doped fibers and high-power fiber laser components. In Proceedings 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, CLEO/Europe-EQEC 2015. Optical Society of America..

Record type: Conference or Workshop Item (Paper)

Abstract

We present the novel use of a well-known angular interrogation method [1] for characterizing the absorption and loss of multimode doped fibers [2] and high-power fiber laser components, such as cladding mode-strippers [3]. Both meridional and skew rays can be excited by launching light at an angle to the axis of the fiber under test, as shown in the setup of Fig. 1(a). After propagating through the fiber under test, the power of the received light is measured with an integrating sphere that captures all angles. Fig. 1(c) shows the characterization of different cladding mode-strippers (MS). The reference fiber is a circular coreless fiber formed by low-loss synthetic silica glass and low-index polymer. It has a numerical aperture (NA) of ~0.44 and it is typically used for pump power delivery. MS#1 is less effective than MS#2 at attenuating both low- and higher-order cladding modes. The MS#2 results on the other hand, show that only light in the core (NA<0.1) remains, which is ideal for a cladding mode stripper.

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More information

Published date: 25 June 2015
Venue - Dates: 2015 European Conference on Lasers and Electro-Optics: CLEO®/Europe-EQEC 2015, Munich, Germany, 2015-06-21 - 2015-06-25

Identifiers

Local EPrints ID: 430840
URI: https://eprints.soton.ac.uk/id/eprint/430840
PURE UUID: 3739b080-cfc1-43ba-9899-27ab81d14b9f
ORCID for M.N. Zervas: ORCID iD orcid.org/0000-0002-0651-4059

Catalogue record

Date deposited: 16 May 2019 16:30
Last modified: 11 Jun 2019 00:38

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